Cita APA (7a ed.)

Rusell, K., & Williams, S. (1972). The Principles of dairy farming (6th edition.). Farming Press.

Cita Chicago Style (17a ed.)

Rusell, Kenneth, y Stephen Williams. The Principles of Dairy Farming. 6th edition. Ipswich: Farming Press, 1972.

Cita MLA (8a ed.)

Rusell, Kenneth, y Stephen Williams. The Principles of Dairy Farming. 6th edition. Farming Press, 1972.