APA (7e ed.) Bronvermelding

Não informado. (1950). Agronomy abstracts. American Society of Agronomy.

Chicago (17e ed.) Bronvermelding

Não informado. Agronomy Abstracts. Madison, Wis: American Society of Agronomy, 1950.

MLA (8e ed.) Bronvermelding

Não informado. Agronomy Abstracts. American Society of Agronomy, 1950.

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