Citation style guide

IEEE numeric

IEEE identifies sources with bracketed numbers and lists references in the order they first appear.

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The essentials

How IEEE works

COMMONLY USED BY

Electrical engineering, computing, electronics, telecommunications and technical publishing.

IN-TEXT PATTERN

Use a bracketed number: Recent work shows this pattern [1]. Refer to a range as [2]–[4].

LIST HEADING

References

ORDER

Numerical order of first appearance—not alphabetical order.

Direct quotations

Use the source number and, when needed, a page locator such as [3, p. 42].

Copy the pattern, verify the facts

IEEE reference examples

Journal article

[1] S. I. Patel and A. Khan, “Digital research habits among university students,” Journal of Learning Practice, vol. 18, no. 2, pp. 44–59, 2025.

Book

[2] L. Rahman, Research Skills for Modern Learners. London, U.K.: Horizon Academic, 2024.

Website

[3] National Research Council, “Evaluating online evidence,” Mar. 12, 2026. [Online]. Available: https://example.org/evidence. [Accessed: Aug. 20, 2026].

These examples use invented publication details to demonstrate structure. Replace every element with information from your actual source.

Review before submission

Common mistakes

  • Alphabetising the reference list.
  • Renumbering a repeated source instead of reusing its original number.
  • Putting citation numbers in parentheses.
  • Omitting volume, issue or page details from journal articles.
  • Using inconsistent abbreviated journal titles.

Final review

IEEE checklist

  • Numbers follow first appearance.
  • Repeated sources reuse the same number.
  • Author initials precede surnames.
  • Online sources include access information when required.
  • Every bracketed number maps to one reference.
Check the authority

Course, institution and publisher rules can override general examples.

IEEE Reference Guide ↗

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