Cita APA (7a ed.)

Külpe, O. (1929). Kant (2a ed.). Labor.

Cita Chicago Style (17a ed.)

Külpe, Oswald. Kant. 2a ed. Barcelona [etc.]: Labor, 1929.

Cita MLA (9a ed.)

Külpe, Oswald. Kant. 2a ed. Labor, 1929.