Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.