Cita APA (7a ed.)

Spierling, V. (2010). Arthur Schopenhauer. Herder.

Cita Chicago Style (17a ed.)

Spierling, Volker. Arthur Schopenhauer. [Barcelona]: Herder, 2010.

Cita MLA (9a ed.)

Spierling, Volker. Arthur Schopenhauer. Herder, 2010.