APA (7e ed.) Bronvermelding

Não informado. (1948). What-s new in crops and soils. American Society of Agronomy.

Chicago (17e ed.) Bronvermelding

Não informado. What-s New in Crops and Soils. Madison, Wis: American Society of Agronomy, 1948.

MLA (8e ed.) Bronvermelding

Não informado. What-s New in Crops and Soils. American Society of Agronomy, 1948.

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