APA (7e ed.) Bronvermelding

Não informado. (1972). Journal of agronomic education. American Society of Agronomy.

Chicago (17e ed.) Bronvermelding

Não informado. Journal of Agronomic Education. Madison, Wis: American Society of Agronomy, 1972.

MLA (8e ed.) Bronvermelding

Não informado. Journal of Agronomic Education. American Society of Agronomy, 1972.

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