Citazione Stile APA (7a Edizione)

Penson, J. B. J., Pope, R. D., & Cook, M. I. (1986). Introduction to agricultural economics. Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Penson, John B. Jr, Rulon D. Pope, e Michael I. Cook. Introduction to Agricultural Economics. Englewood Cliffs, New Jersey: Prentice Hall, 1986.

Citatione MLA (9a ed.)

Penson, John B. Jr, et al. Introduction to Agricultural Economics. Prentice Hall, 1986.