Cita APA (7th ed.)

Brent, G., Hovell, D., Ridgeon, R. F., & Smith, W. J. (1977). Early weaning of pigs (2a. ed.). Farming Press.

Cita Chicago (17th ed.)

Brent, G., D. Hovell, R. F. Ridgeon, i W. J. Smith. Early Weaning of Pigs. 2a. ed. Londres: Farming Press, 1977.

Cita MLA (9th ed.)

Brent, G., et al. Early Weaning of Pigs. 2a. ed. Farming Press, 1977.