APA (7th ed.) Citation

Kettlewell, B. (1973). The evolution of melanism, the study of a recurring necessity;with special reference to industrial melannism in the lepidoptera. Clarendon Press.

Chicago Style (17th ed.) Citation

Kettlewell, Bernard. The Evolution of Melanism, the Study of a Recurring Necessity;with Special Reference to Industrial Melannism in the Lepidoptera. Oxford: Clarendon Press, 1973.

MLA (9th ed.) Citation

Kettlewell, Bernard. The Evolution of Melanism, the Study of a Recurring Necessity;with Special Reference to Industrial Melannism in the Lepidoptera. Clarendon Press, 1973.