APA (7e ed.) Bronvermelding

Não informado. (1969). American beef producer. American National Livestock Association.

Chicago (17e ed.) Bronvermelding

Não informado. American Beef Producer. Denver, Colo: American National Livestock Association, 1969.

MLA (8e ed.) Bronvermelding

Não informado. American Beef Producer. American National Livestock Association, 1969.

Let op: Deze citaties zijn niet altijd 100% accuraat.