APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Williams, Leonard. Challenge to Survival : A Philosophy of Evolution / (by) Leonard Williams: A Philosophy of Evolution. London: Deutsch, 1971.

MLA (9th ed.) Citation

Williams, Leonard. Challenge to Survival : A Philosophy of Evolution / (by) Leonard Williams: A Philosophy of Evolution. Deutsch, 1971.

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