Box 48No 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 database contains a date of copyright, use the date of copyright preceded by the letter "c"; for example c2005.
    • Clydesdale FM, editor. Food additives: toxicology, regulation, and properties [CD-ROM]. Boca Raton (FL): CRC Press; c1997. 1 CD-ROM: sound, color, 4 3/4 in.

From: Chapter 20, Databases on CD-ROM, DVD, or Disk

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-.

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.