United States. National Library of Medicine. (1978). National Library of Medicine classification: A scheme for the shelf arrangement of books in the field of medicine and its related sciences (4th ed.). The Library.
Chicago Style (17th ed.) CitationUnited States. National Library of Medicine. National Library of Medicine Classification: A Scheme for the Shelf Arrangement of Books in the Field of Medicine and Its Related Sciences. 4th ed. Bethesda, Maryland: The Library, 1978.
MLA (9th ed.) CitationUnited States. National Library of Medicine. National Library of Medicine Classification: A Scheme for the Shelf Arrangement of Books in the Field of Medicine and Its Related Sciences. 4th ed. The Library, 1978.
Warning: These citations may not always be 100% accurate.