Não informado. (1977). Crops and soils magazine. American Society of Agronomy.
Style de citation Chicago (17e éd.)Não informado. Crops and Soils Magazine. Madison, Wis: American Society of Agronomy, 1977.
Style de citation MLA (8e éd.)Não informado. Crops and Soils Magazine. American Society of Agronomy, 1977.
Attention : ces citations peuvent ne pas être correctes à 100%.