How to Cite in IEEE Format: Step-by-Step Guide
The IEEE citation style is a numeric, author–number referencing system widely used in engineering, computer science, and technology fields. It uses bracketed numbers in-text that correspond to a numbered reference list at the end of the document. Engineers, researchers, and students writing technical reports, conference papers, and journal articles commonly use IEEE.
This guide explains the general rules, step-by-step citation examples for common source types, in-text citation conventions, reference list formatting, and frequent mistakes to avoid. For quick citation generation, try Rephrasely’s free citation generator at Rephrasely Citation Generator.
General Rules
- Number citations consecutively in order of appearance in the text. Use square brackets:
[1],[2], etc. - Place citation numbers inside square brackets and include them within the sentence where the source is referenced.
- All references are listed at the end in numerical order (not alphabetically).
- Author names use initials for given names followed by the surname (e.g.,
J. K. Author). - Article titles are in quotation marks; book and conference titles are italicized (or treated as title case).
- Use consistent punctuation and abbreviations for journal names and conference proceedings per IEEE conventions.
How to Cite by Source Type
Books
Format: Author(s), Book Title, edition (if not first). Place of publication: Publisher, year.
[1] W. K. Pratt, Digital Image Processing, 3rd ed. Hoboken, NJ: Wiley, 2007.Actionable tip: For multiple authors list up to six; if there are more than six, list the first author's name followed by "et al." in the reference list.
Journal Articles
Format: Author(s), "Article title," Journal Title, vol. x, no. x, pp. xxx–xxx, Month Year.
[2] S. M. Smith and J. D. Doe, "A fast algorithm for signal processing," IEEE Trans. Signal Process., vol. 58, no. 12, pp. 1234–1242, Dec. 2010.Actionable tip: Use the journal’s official abbreviation (IEEE has standard abbreviations). Include DOI if available after the page numbers: doi:10.xxxx/xxxx.
Conference Papers
Format: Author(s), "Paper title," in Proc. Conference Name, Location, Year, pp. xxx–xxx.
[3] A. B. Chen and C. D. Lee, "Improved routing for wireless sensor networks," in Proc. IEEE Int. Conf. Commun., Paris, France, 2018, pp. 890–895.Actionable tip: If the conference proceedings have editors or a publisher, include those details after the conference name.
Websites and Online Documents
Format: Author(s) (if available), "Document title," Site name. [Online]. Available: URL. [Accessed: Month Day, Year].
[4] National Institute of Standards and Technology, "Guide to IP addressing," NIST. [Online]. Available: https://www.nist.gov/ip-guide. [Accessed: Jan. 15, 2024].Actionable tip: When author is not listed, begin the reference with the organization or site name. Always include an access date for online content that may change.
Standards, Technical Reports, and Patents
Standards format: Title, Standard number, issuing organization, Year.
[5] IEEE Standard for Information technology—Telecommunications and information exchange between systems, IEEE Std 802.11-2016, 2016.Patents format: Inventor(s), "Patent title," Country Patent xxxxx, Patent number, Month Day, Year.
[6] M. R. Jones, "High-efficiency battery charger," U.S. Patent 9 123 456, Apr. 5, 2017.Actionable tip: For technical reports include report number and institution. For standards and patents, include the standard or patent number exactly as issued.
In-Text Citations
IEEE uses bracketed numbers that correspond to the numbered reference list. Insert the citation number where you refer to the source. Place the bracketed number before a comma or period when it closes a clause or sentence.
- Single citation example: “Recent work has improved throughput in mesh networks [3].”
- Multiple citations: separate nonconsecutive citations with commas
[2], [5], and use a dash for ranges[1]–[4]. - Citing the same source multiple times: use the same number each time it is referenced (do not assign new numbers).
Example: "The algorithm achieves 95% accuracy [2]. Further tests confirmed these findings [2], [3]."Actionable rule: Never use author–year in text (e.g., "Smith (2010)"). Always use bracketed numbers and ensure they match the final numbered reference list.
Reference List — Formatting Rules and Example
Place the reference list at the end of your document under a heading such as “References.” Number entries in the order they appear in the text, and enclose each number in square brackets followed by a single space.
Formatting tips:
- Use the same font and size as the body text. Single-space entries with a blank line between references for readability.
- Apply a hanging indent so the number and first line are flush left and subsequent lines are indented.
- Be consistent with abbreviations, punctuation, and capitalization. Use sentence case for article titles and title case for book and conference titles where appropriate.
Complete example reference list:
[1] W. K. Pratt, Digital Image Processing, 3rd ed. Hoboken, NJ: Wiley, 2007.
[2] S. M. Smith and J. D. Doe, "A fast algorithm for signal processing," IEEE Trans. Signal Process., vol. 58, no. 12, pp. 1234–1242, Dec. 2010.
[3] A. B. Chen and C. D. Lee, "Improved routing for wireless sensor networks," in Proc. IEEE Int. Conf. Commun., Paris, France, 2018, pp. 890–895.
[4] National Institute of Standards and Technology, "Guide to IP addressing," NIST. [Online]. Available: https://www.nist.gov/ip-guide. [Accessed: Jan. 15, 2024].
[5] IEEE Standard for Information technology—Telecommunications and information exchange between systems, IEEE Std 802.11-2016, 2016.Actionable checklist before submission:
- Confirm every in-text bracket number matches the correct reference entry.
- Verify author names, spelling, page ranges, DOI, and URLs.
- Ensure consistent abbreviation and punctuation style across all entries.
Common Mistakes to Avoid
1. Incorrect numbering order
Assign numbers based on first appearance in the document. Do not reorder references alphabetically unless the publisher explicitly requests it.
2. Mixing citation styles
Don’t combine IEEE numeric citations with author–year formats. Using both styles in one manuscript confuses readers and reviewers.
3. Missing or incorrect details for online sources
Always include the full URL and access date for web resources. Omitting these can make it hard to verify sources later.
4. Wrong author name format or missing initials
IEEE requires initials followed by surname (e.g., J. A. Brown). Reversing or using full first names can violate style conventions.
Actionable fix: Use Rephrasely’s citation generator at https://rephrasely.com/citation to automatically format references in IEEE style, then cross-check with the original source details.
Practical Workflow Tips
- Start numbering as you write. Insert placeholder numbers if you rearrange paragraphs, but regenerate the final numbering before submission.
- Use a reference manager (EndNote, Zotero, Mendeley) configured for IEEE style to automate formatting and avoid manual errors.
- After generating citations, run your document through Rephrasely’s plagiarism checker to ensure sources are cited correctly and content is original.
- If you use AI to draft sections, check for AI influence with Rephrasely’s AI detector, and refine phrasing with the AI Writer (Composer) or Rephrasely’s paraphraser to improve tone and clarity.
- If you cite non-English sources, use Rephrasely’s translator to provide accurate translated titles and document metadata.
Frequently Asked Questions
How do I cite multiple authors in IEEE?
List up to six authors as initials followed by surnames separated by commas. For seven or more authors, list the first author followed by "et al." Example: [7] A. B. Clark, C. D. Evans, E. F. Gray, et al., "Title," ....
Where should the citation number appear relative to punctuation?
Place the citation number inside square brackets and include it before the sentence’s punctuation when it refers to the whole sentence (e.g., "Results are significant [2]."). If the citation refers to a clause, place the bracket immediately after the clause.
Can I use an automatic tool to generate IEEE citations?
Yes. Automated tools like Rephrasely’s free citation generator (https://rephrasely.com/citation) can save time and reduce formatting errors. Always verify the generated citation against the original source details and the IEEE style requirements in your target publication.