Penson,John B. (1986). Introduction to agricultural economics. Prentice Hall.
シカゴスタイル引用形Penson,John B. Introduction to Agricultural Economics. New Jersey: Prentice Hall, 1986.
MLA引用形式Penson,John B. Introduction to Agricultural Economics. Prentice Hall, 1986.
警告: この引用は必ずしも正確ではありません.