How do I cite a website in IEEE format?

IEEE website format: [Number] Author or Organisation, "Page title in quotation marks," Website Name. URL (accessed Month Day, Year). If no author is identified, start with the organisation or website name. The access date is required for all web sources — IEEE specifies the format as 'accessed Month Day, Year' in parentheses at the end. Do not use a URL shortener. If the page has no identifiable date of publication, do not add one — just include the access date. Web sources should generally be used sparingly in IEEE papers; prefer peer-reviewed journals, conference papers, and standards where possible.

IEEE Format Guide

Q: What is IEEE citation format?

IEEE (Institute of Electrical and Electronics Engineers) citation format is a numbered referencing system used in engineering, computer science, electronics, and related technical disciplines. Sources are numbered sequentially as they appear in the text — [1], [2], [3] — and the full reference details appear in a numbered list at the end of the document, ordered by first appearance rather than alphabetically. IEEE is published by the Institute of Electrical and Electronics Engineers and is the standard citation style for IEEE journals, conferences, and publications. Many universities require it for engineering, computer science, and electrical engineering assignments.

Q: How does IEEE in-text citation work?

IEEE uses bracketed numbers in the text: [1], [2], [3]. The number corresponds to the source's position in the reference list, which is ordered by first appearance in the document. If you cite the same source again later, you use the same number — [1] always refers to the same source throughout the entire paper. Multiple citations in one bracket are separated by commas: [1], [3], [5] or written as a range: [1]–[4]. The bracket sits before the punctuation mark at the end of the sentence. Unlike author-date styles, you do not include the author name or year in the text unless doing so adds clarity to your sentence.

Q: How do I format an IEEE reference list?

The IEEE reference list appears at the end of the document under the heading 'References' (not 'Bibliography'). Entries are numbered sequentially: [1], [2], [3] — in the order they first appear in the text, not alphabetically. Each entry is formatted with the number in square brackets, followed by author initials and surname, title, publication details, and access information for online sources. Author names use initials before the surname: J. Smith, not Smith, J. Titles of journal articles and conference papers go in quotation marks; book titles, journal names, and conference proceedings are italicised. IEEE has specific formats for each source type — journal articles, conference papers, books, book chapters, standards, patents, technical reports, theses, and websites all differ.

Q: How do I cite a journal article in IEEE format?

IEEE journal article format: [Number] A. Author and B. Author, "Article title in quotation marks," Abbreviated Journal Name in Italics, vol. X, no. Y, pp. start–end, Month Year, doi: 10.xxxx/xxxxx. Key rules: author initials come before the surname; the article title is in quotation marks (not italicised); the journal name is italicised and abbreviated according to IEEE's standard journal abbreviations list; volume and issue are given as vol. and no.; pages use pp.; the DOI is included when available. If citing an online-only article with no page numbers, use the article number instead.

Q: How do I cite a conference paper in IEEE format?

IEEE conference paper format: [Number] A. Author and B. Author, "Paper title in quotation marks," in Proc. Conference Name in Italics, City, Country abbreviation, Year, pp. start–end. The key differences from a journal: the word 'in' precedes the proceedings title; the proceedings title is italicised and often begins with 'Proc.' (for Proceedings); location and year follow the title; page numbers come last. For online conference papers, add a DOI or URL and accessed date after the page numbers.

Q: How do I cite a standard in IEEE format?

IEEE standard format: [Number] Standard Issuing Body, Standard Title in Italics, Standard Number, Year. For example: IEEE, IEEE Standard for Ethernet, IEEE Std 802.3-2022, 2022. For IEC or ISO standards: ISO/IEC, Information technology — Security techniques, ISO/IEC 27001:2022, 2022. Standards are treated as authored by the issuing organisation. The standard number is a required element — it uniquely identifies the standard and its version. When citing a specific section or clause, add the section reference after the year in the in-text citation: [1, Sec. 4.2].

Q: How do I cite a patent in IEEE format?

IEEE patent format: [Number] A. Inventor, "Patent title," Country Patent Number, Month Day, Year. For example: [4] J. S. Kilby, "Miniaturized electronic circuits," U.S. Patent 3 138 743, Jun. 23, 1964. The country abbreviation precedes 'Patent' and the patent number. The date is the issue date of the patent. If the patent is pending (not yet issued), write 'Patent pending' in place of the patent number. Month abbreviations follow IEEE convention: Jan., Feb., Mar., Apr., May, Jun., Jul., Aug., Sep., Oct., Nov., Dec.

IEEE CITATION FORMAT · ENGINEERING & TECHNOLOGY · NUMBERED REFERENCES

How to Cite Sources in Engineering and Technology

Numbered in-text citations, reference list rules, and correct formatting for journal articles, conference papers, books, standards, patents, theses, and websites — including the specific details that distinguish correct IEEE from incorrect across every source type.

20–24 min read Engineering & Computer Science Students IEEE Numbered Citation 4,300+ words

Custom University Papers Academic Writing Team

IEEE citation guidance based on the IEEE Editorial Style Manual for Authors (2023) and IEEE’s official reference format guidelines, covering numbered citations, reference list ordering, and correct formatting for every source type engineering and computer science students regularly encounter.

IEEE does not work like Harvard or APA. There are no author names in the text. No years in brackets. Just a number — [1], [2], [3] — and a reference list at the end that is ordered by when each source first appears, not alphabetically. It is a clean system. But it has very specific formatting rules for each source type, and the details matter. Author name format, journal title abbreviation, how to handle conference papers, when to include a DOI versus a URL — these are not interchangeable choices. This guide goes source type by source type so you know exactly what each reference should look like.

Numbered Citations [1] Reference List Ordering Journal Articles Conference Papers Books & Chapters Standards Patents Technical Reports Websites Theses DOI Formatting IEEE vs APA vs Harvard

What This Guide Covers

What IEEE Format Is and Where It’s Used In-Text Citations — The Numbering System The Reference List — How It Works Author Name Format in IEEE Journal Articles Conference Papers Books and Book Chapters Standards Patents Technical Reports and White Papers Theses and Dissertations Websites and Online Sources Special Cases: No Author, No Date, No Page Common Errors That Cost Marks Frequently Asked Questions

What IEEE Format Is and Where It’s Used

IEEE stands for Institute of Electrical and Electronics Engineers. It is the world’s largest technical professional organisation for engineers and applied scientists, and its citation style is the standard across electrical engineering, computer science, electronics, telecommunications, and related disciplines. When you submit to an IEEE journal or conference, you use IEEE format. When your university department requires it for assignments, you use IEEE format.

The authoritative source is the IEEE Editorial Style Manual for Authors, available directly from IEEE at journals.ieeeauthorcenter.ieee.org. This is the primary verified reference for IEEE formatting. If anything in a third-party guide conflicts with the IEEE manual, the manual wins.

Numbered, Not Author-Date

Every source gets a number when it first appears in the text. That number stays with that source for the entire paper. No author names in brackets. No years. Just [1], [2], [3]. The reader goes to the reference list at the end to see what each number refers to.

Ordered by Appearance, Not Alphabet

The reference list is not alphabetical. [1] is the first source cited in the paper, [2] is the second, and so on. If you cite 12 sources, the reference list runs [1] through [12] in the order they first appeared in your text — regardless of author surname.

Built for Technical Literature

IEEE has specific formats for source types common in technical writing: standards (IEEE, ISO, IEC), patents, datasheets, conference proceedings, technical reports, and preprints. These do not appear in Harvard or APA guides. IEEE handles all of them.

In-Text Citations — The Numbering System

The in-text citation is a bracketed number. That is it. Simple in principle. The rules around it are what students get wrong.

Situation	In-Text Format	Note
Single source	`[1]`	Bracket before the full stop at end of sentence.
Two sources	`[1], [2]`	Separate brackets, comma between. Not [1,2].
Three or more non-consecutive	`[1], [3], [5]`	List each separately.
Consecutive range	`[1]–[4]`	En dash between first and last. Used for 3+ consecutive numbers.
Specific page in a source	`[1, p. 45]`	Page reference inside the bracket, after a comma.
Specific section	`[1, Sec. 4.2]`	Section reference inside the bracket.
Specific equation or figure	`[1, eq. (3)]` or `[1, Fig. 2]`	Equation or figure reference inside the bracket.
Author name in narrative	Smith [1] found that…	Optional — only when naming the author adds clarity.
Citing same source again	`[1]`	Same number every time. Never renumbered.

The Bracket Goes Before the Full Stop

In IEEE, the citation bracket sits immediately before the sentence-closing punctuation: “…this method reduces latency significantly [1].” Not after it: “…this method reduces latency significantly. [1]” The bracket is part of the sentence, not a floating annotation outside it. This is a consistent formatting requirement and one of the most frequently corrected errors in submitted work.

The Reference List — How It Works

Reference List Rules

Headed “References” — not “Bibliography”
Numbered sequentially: [1], [2], [3]…
Ordered by first appearance in text — not alphabetically
Each entry on its own line, number in square brackets
Hanging indent — number flush left, text indented
No bold on author names, no italics on author names
Author initials before surname: A. B. Smith — not Smith, A. B.
Article titles in “quotation marks”
Journal names, book titles, and proceedings in italics
DOI included when available; URL with access date if no DOI

Order of Elements — Standard IEEE Entry

[Number] Author initials Surname,
“Article/chapter title,” in quotation marks,
Journal or book title in italics,
vol. X, no. Y, volume and issue numbers,
pp. start–end, page range,
Mon. Year, abbreviated month and year,
doi: 10.xxxx/xxxxx. DOI if available.

Not every element applies to every source type. The sections below show exactly which elements are required for each.

1Ordered by First Appearance — Not Alphabetically

The first source you cite in the paper is [1], the second new source you cite is [2], and so on. If your introduction cites three sources, those become [1], [2], [3]. If your conclusion cites a source not previously cited, it gets the next available number. The reference list follows this order — not the author’s surname. This means your reference list may start with a conference paper, then a book, then a standard — whatever appeared first in your text.

2Abbreviated Month Names

IEEE uses three-letter abbreviations for months: Jan., Feb., Mar., Apr., May, Jun., Jul., Aug., Sep., Oct., Nov., Dec. Note that May is not abbreviated (it is already three letters). These abbreviations are used consistently in dates throughout references — do not write “January” or “Jan” without the full stop.

3Journal Names Are Abbreviated

IEEE journal names use standard abbreviations from the IEEE’s own journal abbreviations list. IEEE Transactions on Neural Networks and Learning Systems becomes IEEE Trans. Neural Netw. Learn. Syst. Writing the full journal name in an IEEE reference is technically incorrect, though most markers accept it if abbreviations are not available. When submitting to actual IEEE publications, abbreviations are mandatory. Your institution may specify whether to abbreviate — check the assignment guidelines.

Author Name Format in IEEE

This is where IEEE trips up students used to Harvard or APA. The name order and format are different from both.

IEEE: Initials Before Surname

IEEE format: A. B. Smith. Initials come first, each followed by a full stop and a space, then the surname. Two initials: A. B. Smith. One initial: A. Smith. Do not reverse the name. Do not write Smith, A. B. — that is Harvard/APA convention. The initial-first format is used in both the reference list and in narrative in-text citations.

For two authors: A. Smith and B. Jones. For three authors: A. Smith, B. Jones, and C. Brown. For four or more authors: A. Smith et al.

When to Use et al.

IEEE uses et al. (italicised) for sources with four or more authors — in the reference list entry. In the reference list, list up to three authors in full; for four or more, write the first author then et al.

In-text, the bracketed number replaces all author names anyway, so et al. only appears if you use a narrative citation: Smith et al. [4] demonstrated that…

Author Name Format Examples // Single author — correct IEEE format J. Smith, // Two authors A. Smith and B. Jones, // Three authors A. Smith, B. Jones, and C. Brown, // Four or more authors — et al. after first author A. Smith et al., // WRONG — reversed name order (Harvard/APA style) Smith, J., // IEEE puts initials first. Reversed order is Harvard/APA. Do not mix conventions. // WRONG — full first name John Smith, // IEEE uses initials only. Never write the full first name in an IEEE reference.

Journal Articles

Journal articles are the most common source type in IEEE papers. The format is precise. Get the anatomy right and the rest is pattern-matching.

Author(s) — Initials Surname, format

A. B. Smith and C. D. Jones, — initials before surname, comma after the full author string.

“Article title in quotation marks,”

Sentence case — only the first word and proper nouns capitalised. The title goes in double quotation marks, not italics. Comma inside the closing quotation mark.

Abbreviated Journal Name in Italics,

Journal name italicised and abbreviated per IEEE standard abbreviations. vol. X, no. Y, follow immediately after.

pp. start–end, Mon. Year,

Page range with en dash, abbreviated month, four-digit year. If no page numbers (online-only): use the article number instead: Art. no. XXXXXX.

doi: 10.xxxx/xxxxx.

Include the DOI when available. IEEE format: doi: followed by the DOI string — no “https://doi.org/” prefix needed in the reference list entry. If no DOI: [Online]. Available: URL. Accessed: Month Day, Year.

Journal Article Reference Examples — IEEE Format // Standard journal article with DOI [1] A. Krizhevsky, I. Sutskever, and G. E. Hinton, “ImageNet classification with deep convolutional neural networks,” Commun. ACM, vol. 60, no. 6, pp. 84–90, Jun. 2017, doi: 10.1145/3065386. // Online-only article — no page numbers, use article number [2] Y. LeCun, Y. Bengio, and G. Hinton, “Deep learning,” Nature, vol. 521, no. 7553, Art. no. 7553, May 2015, doi: 10.1038/nature14539. // Journal article — URL only, no DOI, access date required [3] K. Osei and A. Mensah, “Mobile network latency in low-bandwidth environments,” IEEE Trans. Commun., vol. 70, no. 3, pp. 1823–1835, Mar. 2022. [Online]. Available: https://ieeexplore.ieee.org/document/xxxxxxx. Accessed: Jan. 5, 2025. // WRONG — full first names, non-abbreviated journal, no vol./no. [1] Andrew Krizhevsky, Ilya Sutskever, Geoffrey Hinton, “ImageNet classification with deep convolutional neural networks,” Communications of the ACM, pp. 84–90, 2017. // Initials only. Abbreviated journal name. vol., no., and month all required.

Conference Papers

Conference papers are the second most common source type in engineering writing. The format is close to journal articles but has three key differences: the word “in” before the proceedings title, location details after the title, and no volume/issue numbers.

Conference Paper Reference Examples — IEEE Format // Standard conference paper — print proceedings [4] Y. Bengio, P. Lamblin, D. Popovici, and H. Larochelle, “Greedy layer-wise training of deep networks,” in Proc. Adv. Neural Inf. Process. Syst. (NIPS), Vancouver, BC, Canada, 2007, pp. 153–160. // Conference paper — online with DOI [5] A. Vaswani et al., “Attention is all you need,” in Proc. 31st Int. Conf. Neural Inf. Process. Syst. (NIPS 2017), Long Beach, CA, USA, 2017, pp. 5998–6008, doi: 10.5555/3295222.3295349. // Conference paper — no page numbers available [6] B. Chen and D. Williams, “Fault detection in distributed sensor networks,” in Proc. IEEE Int. Conf. Commun. (ICC), Seoul, South Korea, May 2022, doi: 10.1109/ICC45855.2022.9839204. // WRONG — missing “in”, no location, journal-style volume/issue [4] Y. Bengio et al., “Greedy layer-wise training,” NIPS Proceedings, vol. 20, 2007, pp. 153–160. // Conference papers use “in Proc.” — not volume/issue. Location is required.

Abbreviating Conference Names

Like journal names, IEEE conference names are abbreviated in references. “Proceedings of the IEEE International Conference on Communications” becomes “Proc. IEEE Int. Conf. Commun.” IEEE maintains an abbreviations list. Your institution may not require abbreviation for student assignments — check your guidelines. If unsure, either abbreviate consistently throughout or use full names consistently throughout. Do not mix abbreviated and full names in the same reference list.

Books and Book Chapters

Book and Book Chapter Examples — IEEE Format // Single author book [7] S. Haykin, Neural Networks and Learning Machines, 3rd ed. Upper Saddle River, NJ, USA: Prentice Hall, 2009. // Multiple author book [8] I. Goodfellow, Y. Bengio, and A. Courville, Deep Learning. Cambridge, MA, USA: MIT Press, 2016. // Edited book [9] R. Bishop, Ed., The Mechatronics Handbook. Boca Raton, FL, USA: CRC Press, 2002. // Chapter in an edited book [10] D. Silver, “Reinforcement learning and games,” in Artificial Intelligence for Games, I. Millington and J. Funge, Eds. Burlington, MA, USA: Morgan Kaufmann, 2018, pp. 311–340. // E-book with DOI [11] C. M. Bishop, Pattern Recognition and Machine Learning. New York, NY, USA: Springer, 2006. [Online]. Available: https://doi.org/10.1007/978-0-387-45528-0 // WRONG — author name reversed, no publisher location [7] Haykin, S. Neural Networks and Learning Machines, 3rd ed. Prentice Hall, 2009. // Initials before surname. Publisher location (city, state/country) is required in IEEE book references.

Publisher Location Is Required for Books

IEEE book references include the publisher’s city and country (or US state abbreviation): Upper Saddle River, NJ, USA or Cambridge, MA, USA. This is different from APA 7th edition, which dropped the city requirement. In IEEE, publisher location stays. If a book has multiple publisher locations listed, use the first one on the title page.

Standards

Standards are one of the source types where IEEE shines over other citation styles. Engineers cite them constantly — IEEE standards, ISO standards, IEC standards, ANSI standards. The format is specific and consistent.

IEEE Standard

Format: Issuing Body, Standard Title, Standard Number, Year.

[12] IEEE, IEEE Standard for Ethernet, IEEE Std 802.3-2022, 2022.

ISO / IEC Standard

Format: ISO/IEC, Standard Title, Standard Number:Year, Year of publication.

[13] ISO/IEC, Information Technology — Security Techniques — Information Security Management Systems — Requirements, ISO/IEC 27001:2022, 2022.

ITU Standard

Format: ITU-T, Standard Title, Recommendation Number, Year.

[14] ITU-T, The Directory: Public-Key and Attribute Certificate Frameworks, Recommendation ITU-T X.509, 2019.

Citing a Specific Clause or Section of a Standard

When your citation refers to a particular section of a standard rather than the standard as a whole, include the section reference in the in-text citation: [12, Sec. 4.2.1] or [12, Cl. 7]. This is especially useful in technical writing where you are citing specific requirements or definitions. The reference list entry does not change — the section reference only appears in the in-text citation.

Patents

Patents come up in design reports, literature reviews, and any paper dealing with novel technical approaches. IEEE has a specific format for them.

Patent Reference Examples — IEEE Format // Issued patent — US [15] J. S. Kilby, “Miniaturized electronic circuits,” U.S. Patent 3 138 743, Jun. 23, 1964. // Issued patent — with online availability [16] M. Abadi et al., “Method and system for training machine learning models on distributed computing systems,” U.S. Patent 10 984 316 B2, Apr. 20, 2021. [Online]. Available: https://patents.google.com/patent/US10984316B2. Accessed: Feb. 10, 2025. // Patent pending [17] A. Osei and K. Mensah, “Adaptive bandwidth allocation in IoT mesh networks,” U.S. Patent pending. // European patent [18] H. Schmid, “Integrated circuit amplifier design,” European Patent EP 1 234 567 B1, Mar. 15, 2005.

Technical Reports and White Papers

Technical reports from companies, research institutions, and government bodies are common in engineering literature. IEEE handles these as a distinct source type.

Technical Report

Format: Author(s), “Report title,” Organisation, City, Country, Rep. Number, Month Year.

[19] T. Cover and P. Hart, “Nearest neighbor pattern classification,” Stanford Univ., Stanford, CA, USA, Tech. Rep. TR-1967-1, Apr. 1967.

Industry White Paper

Company author, no individual named

[20] Cisco Systems, “Cisco annual internet report (2018–2023),” Cisco, San Jose, CA, USA, White Paper, Mar. 2020. [Online]. Available: https://www.cisco.com/c/en/us/solutions/collateral/executive-perspectives/annual-internet-report/white-paper-c11-741490.html. Accessed: Jan. 15, 2025.

RFC (Request for Comments)

IETF RFC format

[21] T. Berners-Lee, R. Fielding, and L. Masinter, “Uniform resource identifier (URI): Generic syntax,” IETF, Fremont, CA, USA, RFC 3986, Jan. 2005. [Online]. Available: https://www.rfc-editor.org/rfc/rfc3986. Accessed: Mar. 3, 2025.

Theses and Dissertations

Thesis and Dissertation Examples — IEEE Format // PhD dissertation [22] K. Osei, “Deep learning approaches to network intrusion detection,” Ph.D. dissertation, Dept. Comput. Sci., Univ. of Ghana, Accra, Ghana, 2023. // Master’s thesis [23] A. Williams, “Energy harvesting techniques for wireless sensor nodes,” M.S. thesis, Dept. Elect. Eng., Massachusetts Inst. Technol., Cambridge, MA, USA, 2021. // Online thesis with URL [24] B. Chen, “Fault-tolerant distributed computing in heterogeneous environments,” Ph.D. dissertation, Dept. Comput. Eng., Univ. of Toronto, Toronto, ON, Canada, 2022. [Online]. Available: https://tspace.library.utoronto.ca/handle/1807/xxxxx. Accessed: Feb. 22, 2025. // WRONG — full degree name, non-abbreviated department [22] K. Osei, “Deep learning approaches,” Doctoral Dissertation, Department of Computer Science, University of Ghana, 2023. // Use Ph.D. dissertation or M.S. thesis. Abbreviate department names. Include city and country.

Websites and Online Sources

Web sources should be used sparingly in IEEE papers. Peer-reviewed journals, conference proceedings, and standards carry far more weight. When you do need to cite a website — for a software library, a company datasheet, or an online tool — the format is consistent.

Element 1

Author or Organisation

Named person: A. B. Smith. Organisation name if no individual author. If truly no author: start with the title.

Element 2

“Page Title”

Page or document title in quotation marks, sentence case. Website name in plain text after a comma if different from the title.

Element 3

[Online] marker

IEEE uses [Online]. before the URL to signal the source type. This element is required for all online-only sources, not just websites.

Element 4

Available: URL

Full URL in plain text after “Available:”. No quotation marks around the URL. No shorteners.

Element 5

Accessed: Date

Required for all web sources. Format: Accessed: Mon. Day, Year. Placed at the very end of the entry.

No Date?

Omit — Don’t Approximate

If no publication date is identifiable, do not include one. The access date documents when you read the page. Do not insert a year you are not certain about.

Website Reference Examples — IEEE Format // Organisation as author, known date [25] TensorFlow, “TensorFlow 2.0 documentation,” Google. [Online]. Available: https://www.tensorflow.org/overview. Accessed: Mar. 12, 2025. // Named author [26] A. Ng, “Machine learning yearning,” deeplearning.ai, 2018. [Online]. Available: https://info.deeplearning.ai/machine-learning-yearning-book. Accessed: Jan. 20, 2025. // No individual author — organisation name leads [27] National Institute of Standards and Technology, “Cybersecurity framework,” NIST, Gaithersburg, MD, USA. [Online]. Available: https://www.nist.gov/cyberframework. Accessed: Feb. 5, 2025. // WRONG — no [Online] marker, no access date [25] TensorFlow, “TensorFlow 2.0 documentation,” https://www.tensorflow.org/overview. // [Online]. Available: is required. Access date is required for all web sources.

Special Cases: No Author, No Date, No Page

No Named Author

Use the organisation, company, or institution name as the author. If no organisation is identifiable either, begin the reference with the title of the document. In-text, the numbered bracket [1] replaces everything — no author name appears in the text anyway.

No Publication Date

Do not add one. Omit the date field. For web sources, the access date at the end of the entry documents when you retrieved the content. If a page has a “last updated” date, that can serve as the date — note it as updated: Month Year.

No Page Numbers — Online Sources

For direct quotation or specific reference within a source without page numbers: use section, equation, or figure identifiers inside the in-text bracket: [3, Sec. 2.1], [3, eq. (4)], [3, Fig. 3]. If no internal identifiers exist, the bracket alone is sufficient.

Preprints (arXiv, etc.)

Cite like a journal article but note the preprint server: [28] A. Smith and B. Jones, “Title of paper,” arXiv:2301.xxxxx [cs.LG], Jan. 2023. [Online]. Available: https://arxiv.org/abs/2301.xxxxx. Accessed: date. Note that preprints are not peer-reviewed — your markers may question their use.

Common Errors That Cost Marks

Reference List in Alphabetical Order

Sorting references alphabetically by author surname is a Harvard habit. IEEE orders by first appearance in the text. [1] is the first source cited, not the one whose author comes first alphabetically. An alphabetically sorted reference list with IEEE numbering in the text will have mismatched numbers throughout.

Number Sources as You Cite Them

Assign numbers as sources first appear: introduction → [1], [2], [3]; literature review → [4], [5], and so on. Build the reference list in that order. If you reorganise sections of your paper, renumber accordingly. Check that every [n] in the text matches [n] in the list before submitting.

Reversed Author Names

“Smith, J.” in an IEEE reference list is wrong. That is Harvard/APA format. IEEE puts initials first: “J. Smith.” This trips up almost every student coming from a social science or humanities background, and it runs through every reference in the list.

Initials Before Surname — Always

J. Smith, not Smith, J. A. B. Smith, not Smith, A. B. The initial-first format is consistent across every source type in IEEE: journals, books, conference papers, reports, theses. Apply it to every author in every entry.

Article Title in Italics

Italicising the article or paper title. In IEEE, article and conference paper titles go in “quotation marks” — not italics. Italics are for the journal name, book title, or proceedings title. Getting these backwards is one of the most common formatting errors.

“Article Titles in Quotes,” Journal Names in Italics

The piece is quoted, the container is italicised. “Deep learning for image recognition” goes in quotation marks. IEEE Transactions on Pattern Analysis goes in italics. A chapter title is in quotes; the book title is in italics. This pattern applies across all source types.

Missing [Online]. Available: for Web Sources

Writing a URL at the end of a reference without the [Online]. Available: prefix. IEEE requires this marker for all online-only sources to signal their format. Just pasting a URL without the [Online]. marker is incomplete.

[Online]. Available: URL. Accessed: Date.

Three components for every online source: the [Online]. marker, Available: followed by the full URL, and Accessed: Month Day, Year at the end. All three are required. If a DOI is available, use doi: instead of [Online]. Available: — DOIs are preferred over URLs in IEEE.

Citation Bracket After the Full Stop

“…this reduces processing time. [1]” — the bracket is outside the sentence. IEEE places the citation bracket before the full stop: “…this reduces processing time [1].” A small detail. Consistent across every citation in the paper.

Bracket Before the Full Stop

“…as demonstrated in prior work [1], [3].” The citation bracket is part of the sentence structure, placed immediately before the closing punctuation. The only exception is when a sentence ends with a quotation — in that case, the bracket follows the closing quotation mark.

Renumbering a Source That Was Already Cited

Assigning a new number to a source the second time it is cited. Source [3] cited in the introduction must remain [3] every time it appears in the paper — including the conclusion. Each source has one number, used consistently throughout.

Same Number, Every Appearance

Track your sources as you write. Many students find it helpful to keep a running list: source → number → first location in text. When you cite it again, pull the number from that list. Every reference management tool (Zotero, Mendeley, EndNote) handles this automatically if set to IEEE style.

Frequently Asked Questions About IEEE Citation

What is IEEE citation format?

IEEE citation format is a numbered referencing system used in engineering, computer science, electronics, and related technical disciplines. Sources are numbered sequentially as they appear in the text — [1], [2], [3] — and full reference details appear in a numbered list at the end of the document, ordered by first appearance rather than alphabetically. It is published by the Institute of Electrical and Electronics Engineers and is the standard for IEEE journals, conferences, and publications. The authoritative source is the IEEE Editorial Style Manual for Authors, available at the IEEE Author Center.

How does IEEE in-text citation work?

IEEE uses bracketed numbers: [1], [2], [3]. The number is assigned when that source first appears in the text and stays with that source for the entire paper. Citing the same source again later uses the same number. Multiple citations in one location: [1], [3], [5] for non-consecutive, or [1]–[4] for a consecutive range. To cite a specific page: [1, p. 45]. Specific section: [1, Sec. 4.2]. The bracket sits before the sentence-closing punctuation — not after it. Unlike author-date systems, no author name or year appears in the text unless you are using a narrative citation where the author name adds useful context.

How do I format an IEEE reference list?

The IEEE reference list is headed “References” — not “Bibliography.” Entries are numbered [1], [2], [3] in the order they first appear in the text, not alphabetically. Each entry follows the pattern: [Number] Author initials Surname, “Article/paper title,” Journal or book title in italics, vol., no., pp., Month Year, doi:. Author names use initials before the surname: A. B. Smith, not Smith, A. B. Article titles go in quotation marks. Journal and book titles are italicised. DOIs are included when available; for online-only sources, use [Online]. Available: URL. Accessed: date.

What is the difference between IEEE and APA referencing?

IEEE uses a numbered system; APA uses author-date. In IEEE, citations are [1], [2] and the reference list is ordered by first appearance in the text. In APA, citations are (Smith, 2021) and the list is alphabetical by surname. IEEE author format is A. B. Smith (initials first); APA format is Smith, A. B. (surname first). IEEE puts article titles in quotation marks; APA uses plain text for article titles. Both italicise journal and book titles. IEEE is standard in engineering and computer science; APA is standard in psychology and social sciences. For APA-specific guidance, see our APA psychology lab report format guide.

How do I cite a journal article in IEEE format?

Format: [Number] A. Author and B. Author, “Article title,” Abbreviated Journal Name, vol. X, no. Y, pp. start–end, Mon. Year, doi: 10.xxxx/xxxxx. Key points: author initials come before the surname; the article title is in quotation marks, not italics; the journal name is italicised and abbreviated; volume uses “vol.,” issue uses “no.,” pages use “pp.”; the month is abbreviated; DOI follows the year. For online-only articles with no page numbers, use the article number: Art. no. XXXXXX. If no DOI is available: [Online]. Available: URL. Accessed: Month Day, Year.

How do I cite a conference paper in IEEE format?

Format: [Number] A. Author and B. Author, “Paper title,” in Proc. Conference Name, City, Country, Year, pp. start–end, doi: xxxxx. The key differences from a journal: “in” precedes the proceedings title; the proceedings title is italicised and typically begins with “Proc.” (for Proceedings); location (city and country) and year follow the proceedings title; page numbers come last. For online conference papers, add a DOI or [Online]. Available: URL. Accessed: date. Conference names are abbreviated in the same way as journal names — check IEEE’s abbreviation conventions.

How do I cite a standard in IEEE format?

For an IEEE standard: [Number] IEEE, Standard Title, IEEE Std Number-Year, Year. For an ISO or IEC standard: [Number] ISO/IEC, Standard Title, ISO/IEC Number:Year, Year. Standards are treated as authored by the issuing body. The standard number is a required element — it uniquely identifies the standard and the version. When citing a specific clause or section, add the reference inside the in-text bracket: [12, Sec. 4.2]. The reference list entry does not change for specific clause citations.

Can I cite the same source multiple times in IEEE?

Yes — and the number stays the same every time. If source [3] is first cited in the introduction, it remains [3] on every subsequent page it appears. The reference list entry for [3] appears once regardless of how many in-text citations use it. To cite a specific page within a repeated source: [3, p. 45]. To cite a specific section: [3, Sec. 4.2]. The reference number is a permanent identifier for that source throughout the entire paper — never reassigned or duplicated.

How do I cite a patent in IEEE format?

Format: [Number] A. Inventor, “Patent title,” Country Patent Number, Month Day, Year. The country precedes “Patent” — U.S. Patent, European Patent, and so on. Month abbreviations follow IEEE convention: Jun., not June. For a patent pending (not yet issued): write “Patent pending” in place of the number. For online patent databases, add [Online]. Available: URL. Accessed: date after the main citation details. Months are abbreviated: Jan., Feb., Mar., Apr., May, Jun., Jul., Aug., Sep., Oct., Nov., Dec.

How do I cite a thesis or dissertation in IEEE format?

Format: [Number] A. Author, “Thesis title,” Ph.D. dissertation or M.S. thesis, Dept. Name Abbrev., University Name Abbrev., City, Country Abbrev., Year. Use “Ph.D. dissertation” or “M.S. thesis” — not “Doctoral Dissertation” or “Master’s Thesis.” Abbreviate the department and university name where standard abbreviations exist: Dept. Comput. Sci., Massachusetts Inst. Technol. Include city and country. For online access: add [Online]. Available: URL. Accessed: Month Day, Year after the year.

IEEE References Slowing You Down?

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What Getting IEEE Right Actually Takes

IEEE is not hard once you understand the core logic: one number per source, ordered by appearance, reference list matches the text. The errors that cost marks are almost always the same ones — alphabetical ordering instead of appearance order, reversed author names from a Harvard habit, article titles italicised instead of quoted, and missing [Online]. markers on web sources.

Three things prevent almost every IEEE error. First: assign numbers as you write, not after — do not leave citation numbering until the end or you will create a mess. Second: know the format difference between source types before you write the reference, not after — a conference paper is not formatted like a journal article. Third: audit your reference list before submitting. Every [n] in the text must have a matching [n] in the list, in exactly that order.

Reference management tools like Zotero, Mendeley, and EndNote all support IEEE style. Use them. They handle numbering and ordering automatically, which removes the two most common structural errors. They still get individual field details wrong sometimes — journal name abbreviations, [Online]. markers, access dates — so a manual check of the generated output is still necessary.

For structured support with IEEE formatting, reference list auditing, and broader academic writing — from undergraduate lab reports to postgraduate research papers and dissertations — our academic writing services, citation and referencing support, and proofreading and editing services cover every referencing style and every level of study.

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