Cita APA (7th ed.)

International Conference on Farm Animals and the Environment, Phillips, C. J. C., & Piggins, D. (1992). Farm animals and the environment. C.A.B. International.

Cita Chicago (17th ed.)

International Conference on Farm Animals and the Environment, C. J. C. Phillips, i David Piggins. Farm Animals and the Environment. Wallingford, Oxon, U.K.: C.A.B. International, 1992.

Cita MLA (8th ed.)

International Conference on Farm Animals and the Environment, et al. Farm Animals and the Environment. C.A.B. International, 1992.