APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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