Penson, J. B. (2002). Introduction to agricultural economics. Upper Saddle River, N.J: Prentice Hall.
Čikaški stil citiranjaPenson, John B. Introduction to Agricultural Economics. Upper Saddle River, N.J: Prentice Hall, 2002.
MLA način citiranjaPenson, John B. Introduction to Agricultural Economics. Upper Saddle River, N.J: Prentice Hall, 2002.
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