John B. Penson, J. Introduction to Agricultural Economics (5.). Pearson India.
Chicagoスタイル(17版)引用形式John B. Penson, Jr. Introduction to Agricultural Economics. 5. Pearson India.
MLA(8版)引用形式John B. Penson, Jr. Introduction to Agricultural Economics. 5. Pearson India.
警告: この引用は必ずしも正確ではありません.