Box 42Both a date of update/revision and a date of citation

Various words are used to show that the content of an article has been changed. Among them are: updated, modified, revised, reviewed.

  • Begin with the date(s) of update/revision in the format year month day
    • Use the wording supplied in the article
    • Give all words for update/revision with the dates provided, in ascending date order
    • Separate words by a semicolon and a space
    • End the date(s) of update/revision with a semicolon and a space
  • Enter the date cited in the format year month day
  • Place all dates of update/revision and date of citation information in one set of square brackets
  • End with a semicolon placed outside the closing bracket
    • Bernhardt JM, Felter EM. Online pediatric information seeking among mothers of young children: results from a qualitative study using focus groups. J Med Internet Res [Internet]. 2004 Mar 1 [updated 2006 Dec 10; cited 2007 Jan 5];6(1):e7 [about 13 p.]. Available from:

From: Chapter 23, Journals on the Internet

Cover of Citing Medicine
Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers [Internet]. 2nd edition.
Patrias K, author; Wendling D, editor.
Bethesda (MD): National Library of Medicine (US); 2007-.

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