Cita APA (7a ed.)

Hammond, J., Mason, I. L., & Robinson, T. J. (1971). Hammond's farm animals (4th. ed.). Edward Arnold.

Cita Chicago Style (17a ed.)

Hammond, John, I. L. Mason, y T. J. Robinson. Hammond's Farm Animals. 4th. ed. London: Edward Arnold, 1971.

Cita MLA (8a ed.)

Hammond, John, et al. Hammond's Farm Animals. 4th. ed. Edward Arnold, 1971.