Penson, J. B. (1996). Introduction to agricultural economics. Prentice Hall.
Chicagoスタイル(17版)引用形式Penson, John B. Introduction to Agricultural Economics. Upper Saddle River, N.J: Prentice Hall, 1996.
MLA(9版)引用形式Penson, John B. Introduction to Agricultural Economics. Prentice Hall, 1996.
警告: この引用は必ずしも正確ではありません.