Box 172Multiple years of publication

  • For multiple years of publication, separate the first and last years of publication by a hyphen. Do not shorten the second of the two years to the last two digits.
    • 2002-2003
    • 1997-1998
    • 1999-2000
  • If months are given, place them after the year. Use English names for months and abbreviate them using the first three letters.
    • 1999 Oct-2000 Mar
    • 2002 Dec-2003 Jan
  • Separate multiple months of publication by a hyphen
    • 2005 Jan-Feb
    • 1999 Dec-2000 Jan
  • Separate multiple seasons by a hyphen; for example, Fall-Winter. Do not abbreviate names of seasons.

From: Chapter 26, Electronic Mail and Discussion Forums

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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