IEEE stands for The Institute of Electrical and Electronics Engineers (IEEE). it’s a referencing style commonly used in technical writing, especially computer science. IEEE referencing style is based on Chicago referencing style. In IEEE referencing, citations are numbered  in the order of their appearance in the manuscript.
Such numbered citations direct the reader to a complete reference list at the end of the manuscript, where all the referenced sources are mentioned. Once a source is cited in the text using a number, the same number is re-used for all subsequent citations belonging to the same source.
The style of referencing in IEEE follows certain rules, which are summed up below:
When it comes to citing online sources containing URLs and/or DOIs, IEEE referencing follows a slightly different pattern than, say, APA. The general format for a time a URL/DOI was accessed is as follows:
Accessed: Abbrev. month and day, year.
Key point to remember: The format in which the accessed date within a reference is written has to match the format given in the final submitted version of a manuscript.
However, there are other formats in IEEE referencing for writing date accessed, too, such as:
While citing online URLs in IEEE referencing, some specific guidelines are to be followed, such as:
IEEE referencing makes use of abbreviates wherever necessary. It puts perhaps way more emphasis on using abbreviations than other formatting styles do.
As mentioned above in general IEEE referencing guidelines, terms are abbreviated in IEEE style. However, there are more categories of things that are to be abbreviated in this specific style of referencing. They are as follows:
Key point to remember: In IEEE referencing, the text within the parentheses following publisher name is not written. Here, it is used just to represent the domain the publishers publish in (academic, press, etc).
Basic format: Author surname and initials, "title of the chapter in the book," in the title of the published book, xth ed. The City of Publisher, (only U.S. State), Country: Abbrev. of Publisher, year, ch. x, sec. x, pp. xxx–xxx.
Basic format: Author surname and initials, "Title of paper," presented at the Abbreviated Name of Conf., The city of Conf., Abbrev. State, Country, Month and day(s), year, Paper number.
presented at the 32nd ESA Antenna Workshop, Noordwijk, The Netherlands, Oct. 5–8, 2010.
Basic format: Name of University. (Year). Title of course. [Online]. Available: URL
Basic format: Author surname and initials, “Title.” (Date, Year). Distributed by Publisher/Distributor. http://url.com (or if DOI is used, end
with a period)
Basic format: University name. (year). Title of lecture. [Type of Medium]. Available: URL
Basic format: Author surname and initials (or Abbrev. Name of Co., City of Co. Abbrev. State, Country). Name of Manual/Handbook, x ed. (year). Accessed: Date. [Online]. Available: http://www.url.com
Basic format: Video owner/Creator, Location (if available). Title of Video: In Initial Caps. (Release Date). Accessed: Month Day, Year. [Online Video]. Available: http://URL.onlinevideo.org
Basic format: Name(s) of Ed(s)., “Title of Issue,” in Title of Journal, Abbrev. month year. [Online]. Available: URL
Basic format: Author surname and initials, “Title of report,” Company, City, State, Country, Rep. no., (optional: vol./issue), Date. Accessed:
Date. [Online]. Available: site/path/file
Basic formats: Author surname and initials, "Title of thesis," M.S. thesis, Abbrev. Dept., Abbrev. Univ., The city of Univ., Abbrev. State, Country, year. [Online]. Available: http://www.url.com
Author surname and initials, "Title of dissertation," Ph.D. dissertation, Abbrev. Dept., Abbrev. Univ., The city of Univ., Abbrev. State, Country, year. [Online]. Available: http://www.url.com
Basic format: Legislative body. Number of Congress, Session. (year, month day). The number of bills or resolution, Title. [Type of medium]. Available: site/path/file
Basic format: First Name Initial(s) Last Name. “Page Title.” Website Title. Web Address (retrieved Date Accessed).
Things to keep in mind while citing websites in IEEE referencing:
Basic format: Creator surname, "Title of artwork," Date of Artwork, Title of Website. City, State, Country: Publisher, Month Day, Year. [Online]. Available: URL or Database Name, Accessed on: Month Day Year.