Não informado. (1948). What-s new in crops and soils. American Society of Agronomy.
Chicagoスタイル(17版)引用形式Não informado. What-s New in Crops and Soils. Madison, Wis: American Society of Agronomy, 1948.
MLA(8版)引用形式Não informado. What-s New in Crops and Soils. American Society of Agronomy, 1948.
警告: この引用は必ずしも正確ではありません.