Não informado. (1913). Journal of the American Society of Agronomy. American Society of Agronomy.
Chicagoスタイル(17版)引用形式Não informado. Journal of the American Society of Agronomy. Washington: American Society of Agronomy, 1913.
MLA(8版)引用形式Não informado. Journal of the American Society of Agronomy. American Society of Agronomy, 1913.
警告: この引用は必ずしも正確ではありません.