Cita APA (7a ed.)

Crawley, M. J. (1992). Natural enemies.: The population biology of predators, parasites and diseases. Blackwell.

Cita Chicago Style (17a ed.)

Crawley, Michael J. Natural Enemies.: The Population Biology of Predators, Parasites and Diseases. Oxford: Blackwell, 1992.

Cita MLA (8a ed.)

Crawley, Michael J. Natural Enemies.: The Population Biology of Predators, Parasites and Diseases. Blackwell, 1992.