Cita APA

National Library of Medicine. (1975). Medical subject headings-annotated alphabetic list. [S.l.]: Springfield, Va. : N.T.I.S..

Citación estilo Chicago

National Library of Medicine. Medical Subject Headings-annotated Alphabetic List. [S.l.]: Springfield, Va. : N.T.I.S., 1975.

Cita MLA

National Library of Medicine. Medical Subject Headings-annotated Alphabetic List. [S.l.]: Springfield, Va. : N.T.I.S., 1975.