Franklin

MLA

Spengler, Oswald, and Charles Francis Atkinson. The Decline of the West. New York: A. A. Knopf, 1932.

APA

Spengler, O., & Atkinson, C. Francis. (1932). The decline of the West. New York: A. A. Knopf.

Chicago

Spengler, Oswald, and Charles Francis Atkinson. The Decline of the West. New York: A. A. Knopf, 1932.