Não informado. (1907). Proceedings of the American Society of Agronomy. American Society of Agronomy.
Chicagoスタイル(17版)引用形式Não informado. Proceedings of the American Society of Agronomy. Washington: American Society of Agronomy, 1907.
MLA(8版)引用形式Não informado. Proceedings of the American Society of Agronomy. American Society of Agronomy, 1907.
警告: この引用は必ずしも正確ではありません.