APA (7e ed.) Bronvermelding

Não informado. (1889). Farmers Bulletin. U.S. Department of Agriculture.

Chicago (17e ed.) Bronvermelding

Não informado. Farmers Bulletin. Washington: U.S. Department of Agriculture, 1889.

MLA (8e ed.) Bronvermelding

Não informado. Farmers Bulletin. U.S. Department of Agriculture, 1889.

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