APA (7e ed.) Bronvermelding

Não informado. (1907). Proceedings of the American Society of Agronomy. American Society of Agronomy.

Chicago (17e ed.) Bronvermelding

Não informado. Proceedings of the American Society of Agronomy. Washington: American Society of Agronomy, 1907.

MLA (8e ed.) Bronvermelding

Não informado. Proceedings of the American Society of Agronomy. American Society of Agronomy, 1907.

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