APA (7th ed.) Citation

Zirkle, C. (1959). Evolution, marxian, biology, and the social scene. University of Pennsylvania.

Chicago Style (17th ed.) Citation

Zirkle, Conway. Evolution, Marxian, Biology, and the Social Scene. Philadelphia: University of Pennsylvania, 1959.

MLA (9th ed.) Citation

Zirkle, Conway. Evolution, Marxian, Biology, and the Social Scene. University of Pennsylvania, 1959.