Cita APA (7a ed.)

Perry, R. B. (1905). The approach to philosophy. C. Scribner's Sons.

Cita Chicago Style (17a ed.)

Perry, Ralph Barton. The Approach to Philosophy. New York: C. Scribner's Sons, 1905.

Cita MLA (9a ed.)

Perry, Ralph Barton. The Approach to Philosophy. C. Scribner's Sons, 1905.

Precaución: Estas citas no son 100% exactas.