Do I number references by the order they appear or alphabetically?

By order of appearance. The first source you cite becomes [1], the second becomes [2], and so on. If you cite [1] again later, it stays [1]—don't create a new number.

How do I cite multiple sources at once?

Use commas for non-consecutive references [1], [3], [5] and en dashes for ranges [1]–[4]. Different publishers may prefer [1, 3, 5] or [1-4]—check your target venue's specifications.

Do I need to abbreviate journal names?

Yes. IEEE uses standard abbreviations per IEEE's reference guide. Common examples: IEEE Trans. Pattern Anal. Mach. Intell. (not the full IEEE Transactions on Pattern Analysis and Machine Intelligence). Many reference managers include IEEE abbreviations.

Can I use author names in my sentences?

Yes, but still include the reference number: “Morrison [3] demonstrated that...” The number is always required, even when naming the author directly.

What if my source has no author?

Begin the reference with the title or organization name. For in-text citations, you still use the same reference number—the numbering system means you rarely need to reference the author directly in your text.

How to Cite in IEEE Format: Complete Citation Guide

This guide will help you understand how to properly cite sources in IEEE format, the standard numbered citation style for engineering, computer science, and technical fields, ensuring that your academic work meets the Institute of Electrical and Electronics Engineers' standards.

The Official Source

The IEEE Reference Guide (updated March 2025) is the official citation resource, published by the Institute of Electrical and Electronics Engineers. Access it at journals.ieeeauthorcenter.ieee.org. The IEEE Editorial Style Manual provides additional formatting guidance for authors submitting to IEEE publications.

Quick Overview

IEEE uses a numbered citation system:

In-text citations — numbers in square brackets [1]
Reference list — numbered entries in order of first citation (not alphabetical)

This is IEEE's defining feature: references are numbered sequentially as they appear in your paper.

In-Text Citations

Use numbers in square brackets. The same number is used every time you cite that source.

Basic Citation

Recent studies show promising results [1].

Multiple Sources

Separate with commas; use an en dash for consecutive numbers.

Several researchers have explored this topic [1], [3], [7].
This has been widely documented [4]–[6].

Citing Specific Pages

Include page numbers within the brackets.

Smith argues that "efficiency is paramount" [1, p. 23].

Author Named in Text

You can mention the author's name, but still include the bracketed number.

As demonstrated by Chen [5], the algorithm performs well under stress conditions.

Subsequent Citations

If you cite source [1] again later in your paper, it remains [1] throughout.

Reference List Basics

The reference list is titled "References" (centered, often in caps). Entries are numbered in the order they first appear in your text—not alphabetically.

Basic Structure

[#] A. A. Author, "Article title," Journal Name, vol. #, no. #, pp. #–#, Month Year.

Journal Article

[1] J. K. Author, "Name of paper," IEEE Trans. Aerospace Electron. Syst., vol. 28, no. 3, pp. 793–800, Jul. 1992.

Journal Article with DOI

[2] M. Chen and R. Liu, "Neural network optimization," IEEE Access, vol. 8, pp. 217231–217245, Dec. 2020, doi: 10.1109/ACCESS.2020.3041234.

Conference Paper

[3] A. B. Author, "Title of paper," in Proc. IEEE Int. Conf. Commun., New York, NY, USA, 2019, pp. 1–5.

Book

[4] G. O. Young, Synthetic Structure of Industrial Plastics, 2nd ed. New York, NY, USA: McGraw-Hill, 1964.

Chapter in Book

[5] J. Jones, "Networks," in Principles of Communication, 3rd ed., K. Smith, Ed. New York, NY, USA: Wiley, 2015, pp. 15–64.

Website

[6] J. Smith. "Title of webpage." Organization Name. https://www.example.com/page (accessed Jan. 15, 2024).

Thesis/Dissertation

[7] J. O. Williams, "Narrow-band analyzer," Ph.D. dissertation, Dept. Elect. Eng., Harvard Univ., Cambridge, MA, USA, 1993.

Key IEEE Conventions

Author names — use initials for first and middle names: J. K. Smith (not John K. Smith)
Journal abbreviations — IEEE journals use standard abbreviations (e.g., IEEE Trans. Signal Process. for IEEE Transactions on Signal Processing)
Month abbreviations — Jan., Feb., Mar., Apr., May, Jun., Jul., Aug., Sep., Oct., Nov., Dec.
Volume and issue — format as vol. 28, no. 3 (volume in bold in some implementations)
Page ranges — use an en dash: pp. 123–145
DOIs — include when available, formatted as doi: 10.xxxx/xxxxx

Common Mistakes to Avoid

Alphabetizing references — IEEE references are numbered by citation order, not alphabetical. This is the most common error.
Using full author names — use initials only: J. Smith, not John Smith.
Forgetting journal abbreviations — IEEE journals have standard abbreviations. Check the IEEE Reference Guide.
Wrong bracket style — use square brackets [1], not parentheses (1) or superscripts.
Renumbering after edits — when you add new citations during revision, they get the next available number. Don't renumber your entire reference list.

Who Uses IEEE Style?

IEEE is the standard for electrical and electronic engineering, computer science and engineering, telecommunications, information technology, robotics and automation, and biomedical engineering.

If you're submitting to an IEEE journal or conference, or studying engineering or computer science, you'll likely need IEEE format.

IEEE vs. Other Numbered Styles

IEEE is one of several numbered citation systems. Key differences:

Style	Bracket Type	Order	Primary Field
IEEE	[1]	Citation order	Engineering
Vancouver	(1) or superscript	Citation order	Medicine
ACS	Superscript	Citation order	Chemistry

Further Resources

IEEE Reference Guide — official comprehensive guide
IEEE Editorial Style Manual — formatting for IEEE publications
Purdue OWL IEEE Guide — free tutorial resource

Need help generating IEEE citations? Research tools like Wonders can export your sources in IEEE format automatically.