APA (7e ed.) Bronvermelding

Não informado. (1913). Journal of agricultural research. U.S. Department of Agriculture.

Chicago (17e ed.) Bronvermelding

Não informado. Journal of Agricultural Research. Washington: U.S. Department of Agriculture, 1913.

MLA (8e ed.) Bronvermelding

Não informado. Journal of Agricultural Research. U.S. Department of Agriculture, 1913.

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