Não informado. (1980). Nursing & Health Care. National League for Nursing.
Chicago-referens (17:e uppl.)Não informado. Nursing & Health Care. New York: National League for Nursing, 1980.
MLA-referens (8:e uppl.)Não informado. Nursing & Health Care. National League for Nursing, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.