Cita APA (7th ed.)

Whittemore, C. T., & Elsley, F. W. (1977). Practical pig nutrition. Farming Press.

Cita Chicago (17th ed.)

Whittemore, C. T., i F. W. Elsley. Practical Pig Nutrition. Londres: Farming Press, 1977.

Cita MLA (9th ed.)

Whittemore, C. T., i F. W. Elsley. Practical Pig Nutrition. Farming Press, 1977.