Cita APA (7a ed.)

Garve, C., & Wölfel, K. (1974). [Popularphilosophische., 1]. Metzler.

Cita Chicago Style (17a ed.)

Garve, Christian, y Kurt Wölfel. [Popularphilosophische., 1]. Stuttgart: Metzler, 1974.

Cita MLA (8a ed.)

Garve, Christian, y Kurt Wölfel. [Popularphilosophische., 1]. Metzler, 1974.