Não informado. (1950). Agronomy abstracts. American Society of Agronomy.
Chicagoスタイル(17版)引用形式Não informado. Agronomy Abstracts. Madison, Wis: American Society of Agronomy, 1950.
MLA(8版)引用形式Não informado. Agronomy Abstracts. American Society of Agronomy, 1950.
警告: この引用は必ずしも正確ではありません.