Cita APA (7th ed.)

Spierling, V. (2010). Arthur Schopenhauer (1a. ed.). Herder.

Cita Chicago (17th ed.)

Spierling, Volker. Arthur Schopenhauer. 1a. ed. Barcelona: Herder, 2010.

Cita MLA (9th ed.)

Spierling, Volker. Arthur Schopenhauer. 1a. ed. Herder, 2010.