Box 52No 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 publication contains a date of copyright, use the date of copyright preceded by the letter "c"; for example c2005.
    • Griffiths AJ, Miller JH, Suzuki DT, Lewontin RC, Gelbart WM. Introduction to genetic analysis [Internet]. 7th ed. New York: W. H. Freeman & Co.; c2000 [cited 2006 Nov 6]. Available from:
    • Beers MH, Fletcher AJ, Jones TV, Porter R, Berkwits R, Kaplan JL, editors. The Merck manual of medical information [Internet]. 2nd home ed.; Online version. Whitehouse Station (NJ): Merck Research Laboratories; c2004-2006 [cited 2006 Nov 1]. Available from:

From: Chapter 22, Books and Other Individual Titles 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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