Não informado. (1958). Crops and soils. American Society of Agronomy.
Chicagoスタイル(17版)引用形式Não informado. Crops and Soils. Madison, Wis: American Society of Agronomy, 1958.
MLA(8版)引用形式Não informado. Crops and Soils. American Society of Agronomy, 1958.
警告: この引用は必ずしも正確ではありません.