Cita APA (7a ed.)

Perry, R. B. (1905). The approach to Philosophy. Charles Scribner's Sons.

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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