Não informado. (1948). What-s new in crops and soils. American Society of Agronomy.
Style de citation Chicago (17e éd.)Não informado. What-s New in Crops and Soils. Madison, Wis: American Society of Agronomy, 1948.
Style de citation MLA (8e éd.)Não informado. What-s New in Crops and Soils. American Society of Agronomy, 1948.
Attention : ces citations peuvent ne pas être correctes à 100%.