APA (7th ed.) Citation

Maynard Smith, J. (1972). The theory of evolution (2., ed., repr.). Penguin Books.

Chicago Style (17th ed.) Citation

Maynard Smith, John. The Theory of Evolution. 2., ed., repr. Harmondsworth [u.a.]: Penguin Books, 1972.

MLA (9th ed.) Citation

Maynard Smith, John. The Theory of Evolution. 2., ed., repr. Penguin Books, 1972.