APA (7th ed.) Citation

Hofstadter, R. (1945). Social Darwinism in American thought: 1860-1915. University of Pennsylvania Press.

Chicago Style (17th ed.) Citation

Hofstadter, Richard. Social Darwinism in American Thought: 1860-1915. Philadephia: University of Pennsylvania Press, 1945.

MLA (9th ed.) Citation

Hofstadter, Richard. Social Darwinism in American Thought: 1860-1915. University of Pennsylvania Press, 1945.

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