Não informado. (1969). American beef producer. American National Livestock Association.
Style de citation Chicago (17e éd.)Não informado. American Beef Producer. Denver, Colo: American National Livestock Association, 1969.
Style de citation MLA (8e éd.)Não informado. American Beef Producer. American National Livestock Association, 1969.
Attention : ces citations peuvent ne pas être correctes à 100%.