IEEE citation style: a complete guide
IEEE style is the numbered citation format used across electrical engineering, computer science, and most engineering disciplines. Square-bracket numbers in the text, a numbered reference list in citation order, and journal-name abbreviations that follow IEEE's approved short forms. Our IEEE citation generator handles all of this automatically — paste a DOI, IEEE Xplore URL, or arXiv ID and the generator returns a properly formatted reference.
What is IEEE citation style?
IEEE citation style is the numbered citation format defined in the IEEE Reference Guide (and the IEEE Editorial Style Manual). It is required by all IEEE journals and conferences, and it is the dominant format across electrical engineering, computer science, robotics, and information theory. Most engineering schools also adopt IEEE as the default citation style for student work.
Unlike author-date systems such as APA or Harvard, IEEE assigns each cited source a number, in the order it first appears in the text. The number stays the same on every subsequent citation.
In-text citations
Place the source number in square brackets on the line of text — not superscripted. The bracketed number functions as a noun, so you can write "as shown in [4]" or "the algorithm in [3] outperforms". Multiple sources can share a single bracket: [1], [4]–[6].
The proposed estimator achieves quadratic convergence under standard regularity conditions [3].
Several authors have proposed similar deep-learning architectures for image classification [5]–[7], [9].
Reference [12] introduced the term "residual learning" for very deep networks.
Reference list
The reference list appears at the end of the paper under the heading References, with entries numbered in citation order (not alphabetical). Each entry begins with its bracketed number, followed by a hanging indent. Author initials precede surnames, and journal names use IEEE-standard abbreviations.
[1] K. He, X. Zhang, S. Ren, and J. Sun, "Deep residual learning for image recognition," in Proc. IEEE Conf. Comput. Vis. Pattern Recognit. (CVPR), Las Vegas, NV, USA, Jun. 2016, pp. 770–778, doi: 10.1109/CVPR.2016.90.
Journal articles
IEEE journal references include initials and surnames of all authors (no "et al." until 6+ authors), the article title in quotation marks (sentence case), the abbreviated journal name in italics, volume, issue, page range, and date.
[N] A. A. Author, B. B. Author, and C. C. Author, "Article title," Abbreviated J. Name, vol. X, no. Y, pp. mm–nn, Mon. Year, doi: 10.xxxx/yyyyy.
[2] Y. LeCun, Y. Bengio, and G. Hinton, "Deep learning," Nature, vol. 521, no. 7553, pp. 436–444, May 2015, doi: 10.1038/nature14539.
IEEE journal abbreviations
IEEE requires standard abbreviations for periodical names — IEEE Trans. Pattern Anal. Mach. Intell., not the full title. The abbreviations are listed in the IEEE Reference Guide and in the IEEE Lists of Approved Abbreviations; if you are unsure, the IEEE Xplore abstract page for the article shows the canonical short form.
Conference papers
Conference papers are IEEE's most-cited source type. The format includes the proceedings name (italicized), location, month and year, and page range or article number.
[3] A. Vaswani et al., "Attention is all you need," in Proc. 31st Conf. Neural Inf. Process. Syst. (NIPS), Long Beach, CA, USA, Dec. 2017, pp. 5998–6008.
Books, standards, and datasets
Books
[4] S. Boyd and L. Vandenberghe, Convex Optimization. Cambridge, U.K.: Cambridge Univ. Press, 2004.
Standards
[5] IEEE Standard for Floating-Point Arithmetic, IEEE Standard 754-2019, Jul. 2019.
Datasets
[6] J. Deng et al., "ImageNet large scale visual recognition challenge," 2015. [Online dataset]. Available: https://www.image-net.org/.
Websites and online sources
Web pages are tagged "[Online]" with an "Available:" URL. Include an access date if the page is undated.
[7] OpenAI, "GPT-4 technical report," 2023. [Online]. Available: https://arxiv.org/abs/2303.08774.
Common mistakes
Putting numbers in superscript
IEEE numbers belong on the line, in square brackets — [3], not 3. Superscript numbering is AMA, not IEEE.
Alphabetizing the reference list
IEEE references appear in citation order — the order they were first cited in your paper. Alphabetizing breaks the entire numbering system.
Reusing numbers for the same source
If you cite the same source three times, use the same bracketed number all three times. Do not assign a new number on each citation. The number is a stable identifier, not a sequential marker.
Spelling out journal names
IEEE requires standard abbreviations for journal names. Spelling out "IEEE Transactions on Pattern Analysis and Machine Intelligence" instead of "IEEE Trans. Pattern Anal. Mach. Intell." is a common formatting flag.
Quick summary
| Feature | IEEE rule |
|---|---|
| Citation marker | Bracketed number on the line: [3] |
| Reference order | Citation order, not alphabetical |
| Author format | Initials before surnames |
| 6+ authors | First author + et al. |
| Article titles | Sentence case, in quotation marks |
| Journal names | Italicized, IEEE-standard abbreviations |
| Page numbers | pp. mm–nn |
| Standards | Title in italics, standard number, year |
| DOI | doi: 10.xxxx/yyyyy at the end |
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