Box 50No date of publication, but a date of copyright

  • A copyright date is identified by the symbol ©, the letter "c", or the word copyright preceding the date. If no date of publication can be found, but the homepage contains a date of copyright, use the date of copyright preceded by the letter "c"; for example c2005.
    • NursingWorld: Official Web site of the American Nurses Association [Internet]. Silver Spring (MD): American Nurses Association, Inc.; c2007 [updated 2007 Feb 20; cited 2007 Feb 20]. Available from:
    • APSnet: Plant Pathology Online [Internet]. St Paul (MN): American Phytopathological Association; c1994-2006 [cited 2006 Dec 4]. Available from:

From: Chapter 25, Web Sites

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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