Não informado. (1971). American Family Physician. American Academy of Family Physicians.
Style de citation Chicago (17e éd.)Não informado. American Family Physician. Kansas City, Kan: American Academy of Family Physicians, 1971.
Style de citation MLA (8e éd.)Não informado. American Family Physician. American Academy of Family Physicians, 1971.
Attention : ces citations peuvent ne pas être correctes à 100%.