APA (7e ed.) Bronvermelding

Não informado. (1949). Agricultural economics research. U.S. Department of Agriculture, Bureau of Agricultural Economics.

Chicago (17e ed.) Bronvermelding

Não informado. Agricultural Economics Research. Washington: U.S. Department of Agriculture, Bureau of Agricultural Economics, 1949.

MLA (8e ed.) Bronvermelding

Não informado. Agricultural Economics Research. U.S. Department of Agriculture, Bureau of Agricultural Economics, 1949.

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