Cita APA (7a ed.)

Penson, J. B. (1999). Introduction to agricultural economics (2nd ed.). Prentice Hall.

Cita Chicago Style (17a ed.)

Penson, John B. Introduction to Agricultural Economics. 2nd ed. Upper Saddle River, N.J: Prentice Hall, 1999.

Cita MLA (9a ed.)

Penson, John B. Introduction to Agricultural Economics. 2nd ed. Prentice Hall, 1999.