Não informado. (1969). American Medical News. American Medical Association.
Chicago-referens (17:e uppl.)Não informado. American Medical News. Chicago, Ill: American Medical Association, 1969.
MLA-referens (8:e uppl.)Não informado. American Medical News. American Medical Association, 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.