Citazione Stile APA (7a Edizione)
(1956). National Library of Medicine. Classification: A scheme for the shelf arrangement of books in the field of medicine and its related sciences.
Citazione stile Chigago Style (17a edizione)
National Library of Medicine. Classification: A Scheme for the Shelf Arrangement of Books in the Field of Medicine and Its Related Sciences. Washington, 1956.
Citatione MLA (9a ed.)
National Library of Medicine. Classification: A Scheme for the Shelf Arrangement of Books in the Field of Medicine and Its Related Sciences. 1956.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.