Box 47Locating the date of publication if there is no standard title page

When Databases/Retrieval Systems/Datasets on the Internet do not display a traditional title page that clearly states the dates of coverage, i.e. the date the database began (and closed):

  • Look for a link titled "About", "History", etc., at the top or on the sidebar of the first screen
  • If the date(s) of coverage cannot be determined but the date of the earliest (and latest if closed) records in the database can be determined, place date information in square brackets
    • REHABDATA [Internet]. Lanham (MD): National Institute on Disability and Rehabilitation Research (US), National Rehabilitation Information Center. [1956] -   [cited 2007 Feb 1]. Available from http://www.naric.com/research/rehab/default.cfm
  • If the neither the date(s) of coverage nor the dates of the records in the database can be determined but the database contains a copyright date or date range, (for example: copyright 2006 by the American Chemical Society, © 2003-2007 American Medical Association, c2006 Medical College of Wisconsin), use that date preceded by "c", as c2007.
    • bioProtocol: a Bio Online Site [Internet]. Emeryville (CA): Bio.Com. c1992 -   [cited 2007 Feb 1]. Available from: http://bioprotocol.bio.com/protocolstools/index.jhtml
  • If the neither the date(s) of coverage nor the dates of the records in the database can be determined nor is there a copyright date or date range, but the date can be estimated because of information found elsewhere, follow the date(s) with a question mark and place date information in square brackets
    • The Digital Database for Screening Mammography [Internet]. Tampa (FL): University of South Florida. [1999 - 2000?] [cited 2007 Feb 1]. Available from: http://marathon.csee.usf.edu/Mammography/Database.html
  • If none of the above can be found, use "date unknown" in square brackets
    • Prevention Communication Research Database [Internet]. Rockville (MD): Department of Health and Human Services (US), Office of Disease Prevention and Health Promotion. [date unknown] -   [cited 2007 Feb 1]. Available from: http://www.health.gov/communication/default.asp

From: Chapter 24, Databases/Retrieval Systems/Datasets 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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