Não informado. (1977). Crops and soils magazine. American Society of Agronomy.
Chicagoスタイル(17版)引用形式Não informado. Crops and Soils Magazine. Madison, Wis: American Society of Agronomy, 1977.
MLA(8版)引用形式Não informado. Crops and Soils Magazine. American Society of Agronomy, 1977.
警告: この引用は必ずしも正確ではありません.