APA (7th ed.) Citation

Williams, L. (1971). Challenge to survival: A philosophy of evolution. Deutsch.

Chicago Style (17th ed.) Citation

Williams, Leonard. Challenge to Survival: A Philosophy of Evolution. London: Deutsch, 1971.

MLA (8th ed.) Citation

Williams, Leonard. Challenge to Survival: A Philosophy of Evolution. Deutsch, 1971.

Warning: These citations may not always be 100% accurate.