Cita APA

Spengler, O. 1., & Spengler, O. 1. (1932). The decline of the West. New York, New York: A. Knopf.

Citación estilo Chicago

Spengler, Oswald 1880-1936, y Oswald 1880-1936 Spengler. The Decline of the West. New York, New York: A. Knopf, 1932.

Cita MLA

Spengler, Oswald 1880-1936, y Oswald 1880-1936 Spengler. The Decline of the West. New York, New York: A. Knopf, 1932.