IEEE Citation Format: A Practical Guide with Examples

IEEE uses numbered references. Cite a source in the text with a number in square brackets, then give the complete source details in a numbered reference list. The first source cited is [1], the second is [2], and the same number is reused every time that source appears again.

Reference numbers follow first appearance, not alphabetical order. Once a source has a number, it keeps that number wherever it appears. Do not assign a new number when you cite it in a later paragraph. When a source is removed or moved earlier in the manuscript, update the numbering and every matching in-text citation.

• Place a citation before terminal punctuation when it supports the preceding statement [1].
• Use separate brackets for two nonconsecutive sources, such as [2], [5].
• List consecutive references as separate bracketed numbers, such as [3], [4], [5], [6].
• Name an author in the sentence only when the author matters to the argument. The reference number still supplies the citation.

A reliable IEEE reference starts with a complete source record. Capture the authors, title, publication container, year, and stable identifier before formatting punctuation. For an article, the publication container is usually the journal or conference proceedings. For a book, it is the publisher. For a web source, it is the site or responsible organization.

Use the source itself, the publisher record, or the DOI registry to check these fields. Search-result snippets and copied reference lists can contain shortened titles, missing authors, or the wrong year. A formatter can arrange metadata, but it cannot verify metadata that was never supplied.

1. Confirm the source type. Journal articles, conference papers, books, chapters, and websites use different field orders.
2. Record author names in publication order. Preserve group authors when an organization is credited.
3. Copy the full title and publication name. Keep meaningful capitalization in proper nouns and abbreviations.
4. Check volume, issue, page range or article number, and year against the publisher record.
5. Normalize the DOI to its identifier form, such as 10.1038/s41586-021-03819-2, before generating the reference.

The field order is more important than visual imitation. Start with the correct source pattern, then apply the venue's current author and title rules. The patterns below cover the source types most often used in engineering and computer science manuscripts.

• Journal article: Initials. Surname, "Article title," Journal Title, vol. x, no. x, pp. xx-xx, year, doi: DOI.
• Conference paper: Initials. Surname, "Paper title," in Conference or Proceedings Title, City, Country, year, pp. xx-xx.
• Book: Initials. Surname, Book Title, edition. City, State or Country: Publisher, year.
• Book chapter: Initials. Surname, "Chapter title," in Book Title, edition, Editor Initials. Surname, Ed. City, State or Country: Publisher, year, pp. xx-xx.
• Website: Author or organization, "Page title," Site Name. Accessed: Mon. day, year. [Online]. Available: URL.

These examples show how verified metadata becomes a reference-list entry. The inputs are separated from the finished reference so you can identify which field controls each part of the output.

A DOI is a persistent identifier, not a complete citation. A DOI lookup can return the source title, authors, journal, year, volume, issue, and pages. Review those fields before copying the formatted reference because registry records can be incomplete or can describe an early version of the work.

Paste only a DOI or a doi.org link into a DOI tool. A tool should not fetch arbitrary URLs supplied in the DOI field. After lookup, compare the result with the publisher page or the paper PDF, especially when an article has an online publication year that differs from its issue year.

1. Normalize the DOI by removing a doi: prefix or https://doi.org/ while keeping the identifier unchanged.
2. Retrieve the metadata from a DOI registry such as Crossref or DataCite.
3. Check the title, author order, publication, and year against the source.
4. Generate the IEEE reference and save the BibTeX record with the same verified metadata.
5. Insert the source through the manuscript citation control so numbering follows first appearance.

BibTeX stores citation metadata in named fields. The bibliography style then decides how those fields appear in the manuscript. For an IEEE LaTeX paper, the source record still needs a stable citation key, correct entry type, complete author list, title, publication, year, and available identifiers.

Do not edit a generated bibliography line in isolation if the manuscript is built from BibTeX. Correct the underlying .bib entry and rebuild the document. This keeps the rendered reference, in-text number, and reusable source record consistent.

• Use @article for journal articles and @inproceedings for papers in conference proceedings.
• Separate BibTeX authors with and so the style can parse each person.
• Protect required capitalization in titles with braces, for example {IEEE}, {DNA}, or {LaTeX}.
• Keep the DOI in a doi field without a resolver prefix unless the target workflow specifies otherwise.
• Compile the document twice when the toolchain requires a second pass to resolve reference numbers.

Most reference problems are metadata problems. A citation can look polished while pointing to the wrong version, omitting a contributor, or using a title copied from a preprint when the claim cites the published article.

• Wrong source type: A conference paper formatted as a journal article will place the publication details in the wrong order.
• Broken author parsing: Commas, particles, suffixes, and group authors can be split incorrectly by a generic name parser.
• Mixed publication dates: Online-first, issue, conference, and repository dates may all differ. Use the date required for the version you cite.
• Missing article numbers: Some journals use an article number instead of a page range. Do not invent pages.
• Unverified DOI: Test that the DOI resolves to the cited work and not a correction, supplement, or related dataset.
• Manual numbering drift: Moving text can leave duplicate or skipped reference numbers when citations are plain text instead of structured manuscript nodes.

Check the references after the manuscript structure is stable and again after the final export. A word processor, LaTeX build, or submission conversion can change line wrapping and links even when the source data is correct.

1. Read each in-text citation in context and confirm that the cited source supports the nearby statement.
2. Confirm that every in-text number has one reference-list entry and every reference-list entry is cited in the manuscript.
3. Verify first-appearance numbering from the beginning of the manuscript through tables, figures, footnotes, and appendices.
4. Compare titles, author order, publication, year, volume, issue, pages or article number, and DOI with an authoritative record.
5. Open each DOI and URL in the exported file and confirm that it reaches the intended source.
6. Inspect the final Word or PDF output for missing characters, damaged capitalization, and unrendered BibTeX or LaTeX commands.