APA (7th ed.) Citation

Crook, D. P. (1981). Darwinism - the political implications. History of European ideas.

Chicago Style (17th ed.) Citation

Crook, D. P. "Darwinism - the Political Implications." History of European Ideas 1981.

MLA (8th ed.) Citation

Crook, D. P. "Darwinism - the Political Implications." History of European Ideas, 1981.