Citazione Stile APA (7a Edizione)

Hopkins, J. A., & Murray, W. G. (1953). Elements of farm management (4th ed.). Prentice-Hall.

Citazione stile Chigago Style (17a edizione)

Hopkins, John A., e William Gordon Murray. Elements of Farm Management. 4th ed. New York: Prentice-Hall, 1953.

Citatione MLA (9a ed.)

Hopkins, John A., e William Gordon Murray. Elements of Farm Management. 4th ed. Prentice-Hall, 1953.