Davis, K. C. (1917). Productive farming (3d ed., rev. and enl.). J.B. Lippincott company.
Chicagoスタイル(17版)引用形式Davis, Kary Cadmus. Productive Farming. 3d ed., rev. and enl. Philadelphia and London: J.B. Lippincott company, 1917.
MLA(8版)引用形式Davis, Kary Cadmus. Productive Farming. 3d ed., rev. and enl. J.B. Lippincott company, 1917.
警告: この引用は必ずしも正確ではありません.