IEEE (Institute of Electrical and Electronics Engineers) citations use a numbered bracket system. Every source gets a number [1], [2], [3] — assigned in order of appearance — and the full reference appears in a numbered list at the end of the document.
What Is the IEEE Citation Style?
IEEE is the citation format used in engineering, computer science, electronics, telecommunications, and related technical disciplines. It was developed by the IEEE to create a consistent way of referencing sources in technical papers, journals, and conference proceedings.
Unlike APA or MLA — which use author names in the text — IEEE citations use bracketed numbers. This keeps the text clean and lets readers quickly look up the numbered reference at the bottom.
IEEE In-Text Citation Format
In IEEE, you cite sources by placing the reference number in square brackets directly in the text, like this:
In-text example
Neural networks have shown superior performance in image classification tasks [1]. Several studies confirm this trend [2], [3], [4]. As Smith and Jones demonstrated [5], accuracy improves with deeper architectures.
Key rule: Numbers are assigned in the order sources first appear in the text — not alphabetically. If you cite the same source again, reuse its original number.
IEEE Reference List Format
The reference list appears at the end of the document under the heading References. Entries are numbered and appear in the order they were cited — not alphabetical order.
Journal Article
Format
[#] A. A. Author and B. B. Author, "Title of article," Journal Abbrev., vol. X, no. Y, pp. 000–000, Mon. Year, doi: 10.XXXX/XXXXX.
Example
[1] J. Chen and M. Liu, "Deep learning for medical image segmentation," IEEE Trans. Med. Imag., vol. 39, no. 5, pp. 1234–1248, May 2020, doi: 10.1109/TMI.2020.123456.
Book
Format
[#] A. A. Author, Title of Book, Xth ed. City, Country: Publisher, Year.
Example
[2] S. Haykin, Neural Networks and Learning Machines, 3rd ed. Upper Saddle River, NJ, USA: Pearson, 2009.
Website / Online Source
Format
[#] A. Author, "Title of Page," Website Name, Month Day, Year. [Online]. Available: URL. [Accessed: Month Day, Year].
Example
[3] IEEE, "IEEE Citation Reference," IEEE, Sep. 2009. [Online]. Available: https://ieee.org/references. [Accessed: Jan. 15, 2025].
Conference Paper
Format
[#] A. A. Author, "Title of paper," in Proc. Conference Name (ABBREV), City, Country, Year, pp. 000–000.
Example
[4] P. Jones, "Attention mechanisms in transformers," in Proc. Int. Conf. Machine Learning (ICML), Vienna, Austria, 2024, pp. 456–464.
Quick-Reference Format Table
| Source Type | Key Elements | Use IEEE Generator |
|---|
| Journal Article | Authors, title, journal (abbrev.), vol, no, pages, year, doi | Generate → |
| Book | Authors, title, edition, city, publisher, year | Generate → |
| Book Chapter | Chapter authors, title, in book editors, book title, publisher, year, pages | Generate → |
| Conference Paper | Authors, title, in proc. conference, city, year, pages | Generate → |
| Website | Author, title, site name, date, [Online], URL, [Accessed date] | Generate → |
| PDF / Report | Authors, title, institution, report no., city, month year | Generate → |
| Thesis | Author, title, type (M.S./Ph.D.), university, city, year | Generate → |
| Patent | Inventor, title, country, patent number, date | Generate → |
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IEEE Author Name Rules
IEEE uses specific author name formatting that differs from other styles:
- Use initials for first and middle names: J. Smith, not "John Smith"
- For two authors: A. Smith and B. Jones
- For three or more: list all — A. Smith, B. Jones, and C. Lee
- For more than six authors, list the first three then add et al.
- Organization as author: write the full organization name without abbreviation
Common IEEE Citation Mistakes to Avoid
- Wrong order: References must be numbered in citation order, not alphabetically
- Full author names: Always abbreviate first/middle names to initials
- Journal name not abbreviated: IEEE uses standard journal abbreviations (e.g., IEEE Trans. Commun.)
- Missing doi: Always include the DOI when available — it's mandatory in most IEEE journals
- No "pp." prefix: Page ranges must start with "pp." (e.g., pp. 12–18)
- Missing [Accessed] for websites: Online sources require both date published and date accessed
Frequently Asked Questions
Is there a free IEEE citation generator online?▼
Yes — GradeEssays provides a completely free IEEE citation generator at
/citation-generator/ieee. Enter your source details and get a correctly formatted IEEE reference instantly. No account or signup required.
What does [Online]. Available: mean in IEEE citations?▼
For web sources, IEEE requires the notation "[Online]. Available: URL." followed by "[Accessed: Date]." This explicitly tells readers the source was retrieved online and when it was last verified to exist.
How do I cite a source with no author in IEEE?▼
If no individual author is listed, start the reference with the organization name or the title of the work. For example: IEEE, "Title of Document," ... or "Title of Anonymous Document," Publisher, Year.
Can I cite the same source more than once in IEEE?▼
Yes. When you cite the same source again, reuse its original bracket number. The reference list only contains one entry for that source, regardless of how many times it is cited.
How do I cite multiple sources at the same point in IEEE?▼
List all numbers inside one set of brackets, separated by commas or a dash for consecutive ranges: [1], [3], [7] or [1]–[5]. Example: "Several studies support this claim [2], [4], [6]."