APA (7e ed.) Bronvermelding

Não informado. (1931). Dairy situation. U.S. Department of Agriculture, Economic Research Service.

Chicago (17e ed.) Bronvermelding

Não informado. Dairy Situation. Washington: U.S. Department of Agriculture, Economic Research Service, 1931.

MLA (8e ed.) Bronvermelding

Não informado. Dairy Situation. U.S. Department of Agriculture, Economic Research Service, 1931.

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