IEEE Citation Style: In-Text Citations, Reference List, and Examples

What Is IEEE Citation Style, and Where Did It Come From?

The IEEE citation style was developed by the Institute of Electrical and Electronics Engineers and is loosely based on the Chicago numbered format. It uses sequential bracketed figures in the body copy instead of parenthetical author names, and it collects full publication details in one ordered set at the end of the paper rather than an alphabetical bibliography. The IEEE Editorial Style Manual is the organization’s own authority on formatting, and it is the document most journals and conferences point authors to when a formatting question comes up.

Because this approach favors compact bracketed markers over long author-date citations, it works well for papers citing dozens of technical works, where repeating full names in every sentence would clutter the page. Citing applies whether you quote a work directly or paraphrase its ideas in your own words.

When Should You Use IEEE Style?

Instructors and publications in the following fields typically require this format:

• Electrical & Computer Engineering
• Computer Science
• Telecommunications
• Information Technology
• Robotics
• Aerospace Engineering

If your assignment does not specify a style, check with your instructor or the target publication’s submission guidelines before choosing between IEEE, APA, or MLA. Some organizations publish their own house rules that take priority over the general reference guide.

IEEE, APA, and MLA all exist to point a reader back to your evidence, but they package that pointer differently. The table below lines up the three side by side.

IEEE vs. APA vs. MLA at a Glance

Feature	IEEE	APA	MLA
In-text marker	[1]	(Author, 2026)	(Author 12)
Reference list order	By citation sequence	Alphabetical	Alphabetical
Common field	Engineering, computer science	Social sciences, nursing	Humanities, literature

How Do You Format In-Text Citations in IEEE Style?

Every work gets a bracketed figure the first time it is cited, and that same figure is reused every time the work is cited again later in the paper. Figures are assigned in the order sources first appear, not alphabetically by author.

• Place the bracketed figure before the punctuation that ends the sentence or clause, with a space before the bracket: the results were consistent across trials [3].
• To cite two works at once, separate the figures with a comma: [1], [4]. To cite a consecutive range, use a hyphen: [1]-[3].
• Author names are not required in the sentence, but you can name an author naturally if it helps the reader: Kim [7] proposed an alternative model.
• Repeat the same figure every time you cite that work again. Never assign a new one to a work you already cited. See our guide to introducing quotations for phrasing that pairs a signal phrase with a bracketed figure.

How Do You Cite Multiple Sources or a Secondary Source?

When one sentence draws on more than one source, list every figure that applies rather than picking just one. Group consecutive figures with a hyphen and separate non-consecutive figures with a comma, for example [2], [5]-[7], and keep the figures in ascending order so a reader can scan them quickly.

A secondary source is one you learned about through another author’s writing rather than by reading the original work yourself. Cite the source that actually appeared on your screen or in your hands, and make clear in your writing that it discusses an earlier idea: Allport’s early diary entries, as quoted in [12], describe… Only the work you directly consulted gets a full entry in your reference set. Do not create an entry for a work you never read firsthand.

How Do You Format the IEEE Reference List?

Your reference list appears at the end of the paper under the heading “References,” arranged in the exact order sources were first cited in the running text, not alphabetically by author. Each entry follows a consistent pattern built from these parts, in order: author initials and last name, title in quotation marks, publication name in italics, volume and issue, page span, and year published. The IEEE Citation Guidelines document walks through this pattern for dozens of citation kinds beyond what fits on one page.

• Write author names as initials followed by the last name: J. K. Rowe, not Jane K. Rowe.
• For works with three or more authors, name the first author followed by “et al.” in your writing, but include every author in the full entry.
• Article and chapter titles use sentence case inside quotation marks. Book and journal titles use Title Case and italics.
• Add “[Online]. Available:” before a URL, or the DOI at the end of the entry when one is available. Only add an accessed date when the material has no publication date.

Keep every entry in your references consistent. Use the same URL or DOI formatting throughout, note when a work was first published, and only add an access date when no published date is available online. A reference set that mixes formats across entries is one of the fastest ways to lose points, even when your in-text citations are otherwise correct.

IEEE Citation Examples by Source Type

The table below shows the in-text citation and a full reference entry for the citation kinds cited most often, covering the references you will need most in coursework. Every URL-based entry needs the words “[Online]. Available:” directly before the link, and the entry stays useful to readers only if that URL is still available. For a deeper walkthrough of any single type, follow the linked guide.

Common IEEE Source-Type Formats

Source Type	In-Text Citation	Full Entry (Reference Section)
Journal Article (see our guide to citing journals)	[1]	G. Sanico and M. Kakinaka, “Terrorism and deterrence policy with transnational support,” Def. Peace Econ., vol. 19, no. 2, pp. 153-167, Apr. 2026.
Book (see our guide to citing books)	[2]	M. E. Bonds, Absolute Music: The History of an Idea. New York, NY, USA: Oxford University Press, 2026.
Website (see our guide to citing a website)	[3]	Department of Defense, “About the Department of Defense.” Accessed: Apr. 18, 2026. [Online]. Available: https://www.defense.gov/About/
Government Website (see our guide to citing a government website)	[4]	National Institute of Standards and Technology, “Cybersecurity framework overview.” Accessed: Jan. 9, 2026. [Online]. Available: https://www.nist.gov/cyberframework
Conference Paper	[5]	I. Katz, K. Gabayan, and H. Aghajan, “A multi-touch surface using multiple cameras,” in Adv. Conc. for Intell. Vis. Sys.: 9th Intl. Conf., 2026, pp. 133-140.
PDF / Technical Report (see our guide to citing a PDF)	[6]	National Toxicology Program, “Toxicology and carcinogenesis studies,” Washington, DC, USA, Rep. TR-576, 2026. [Online]. Available: URL
Thesis or Dissertation	[7]	A. G. Demoss, “Optimized trajectories for satellite formation flying using differential drag maneuvers,” M.S. dissertation, Dept. of Mech. Aerosp. Eng., Naval Postgraduate School, Monterey, CA, USA, 2026.
Newspaper Article (see our guide to citing newspaper articles)	[8]	R. Roth, “75 years ago, the Doolittle Raid changed history,” CNN, Apr. 18, 2026. [Online]. Available: URL

What Are the Most Common IEEE Formatting Mistakes?

A few formatting habits separate a clean, publication-ready reference set from one that gets flagged in review. The IEEE Editorial Style Manual for Authors documents these rules in full, but the ones below cover most of what shows up in student papers.

• Do not use honorifics such as Dr., Prof., or Col. in an entry, even if the original work uses them.
• Abbreviate common words in journal and publisher titles: “Trans.” for Transactions, “Proc.” for Proceedings, “Vol.” for Volume, “No.” for Number, “pp.” for pages.
• When an organization, not a person, produced the material, name the organization as the author.
• Every figure cited in your paper needs a matching entry, and every entry needs at least one citation in your writing. Unused entries and orphaned bracket figures are two of the most common student errors.
• Keep title formatting consistent: sentence case in quotes for an article title, Title Case and italics for a book or journal title, on every single entry.
• Match the target journal’s own abbreviation conventions when submitting for publication rather than a class assignment. A journal’s author guidelines take priority over the general IEEE reference guide.
• Spell out an acronym the first time you use it in your writing, then use the short form afterward. The IEEE Editorial Style Manual keeps an official list of accepted engineering acronyms if you are unsure whether one needs spelling out.

How Do You Cite AI-Generated Content Like ChatGPT in IEEE Style?

List the company or tool as the author, followed by the tool’s name in italics, the version number if one is shown, and the date you accessed it. Because a chatbot’s output cannot be retrieved again later the way a webpage can, IEEE guidance asks you to also include the exact prompt you typed and the relevant part of the response directly in your own sentence, not just in the entry.

How Do You Cite a Table, Figure, or Equation in IEEE Format?

Tables and figures each carry their own caption and their own sequential numbering, separate from the numbered citation figures used for sources. Label a table “TABLE I” in small capitals above the table, and label a figure “Fig. 1.” below the image, followed by a short caption. Equations get a plain number in parentheses at the right margin, such as (1), so you can refer back to it later in a sentence as “substituting (1) into (2) gives…”

If a table or figure comes from an outside publication rather than data you generated yourself, add a citation figure to the caption just as you would in running prose, and include a full entry in your reference set for that original work.

Common IEEE Reference Abbreviations

IEEE reference entries lean on a small set of standard abbreviations. Knowing them makes it much faster to read, and write, a correctly formatted entry.

Frequently Used IEEE Abbreviations

Abbreviation	Meaning
vol.	Volume
no.	Number (issue)
pp.	Pages
Ed. / Eds.	Editor / Editors
Trans.	Transactions
Proc.	Proceedings
Rep.	Report
[Online]	Marks a source available on the internet

Putting IEEE Citation Style Into Practice

Once you have drafted your paper, do one final pass focused only on citations. Check that every bracketed figure in your writing has a matching entry, that every entry is cited at least once, and that entries appear in the order sources were first used rather than alphabetically. Run your formatting against the source-type table above for anything unusual, such as a government report or a conference paper, and use the free generator linked in the FAQ below to double-check the trickiest entries before you submit.

IEEE Citation Style FAQ