APA (7e ed.) Bronvermelding

Não informado. (1939). Feed situation. U.S. Department of Agriculture, Bureau of Agricultural Economics.

Chicago (17e ed.) Bronvermelding

Não informado. Feed Situation. Washington: U.S. Department of Agriculture, Bureau of Agricultural Economics, 1939.

MLA (8e ed.) Bronvermelding

Não informado. Feed Situation. U.S. Department of Agriculture, Bureau of Agricultural Economics, 1939.

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