Cita APA (7th ed.)
Hannan, B. (2009). The riddle of the world: A reconsideration of Schopenhauer's philosophy. Oxford University Press.
Cita Chicago (17th ed.)
Hannan, Barbara. The Riddle of the World: A Reconsideration of Schopenhauer's Philosophy. Oxford ; New York: Oxford University Press, 2009.
Cita MLA (9th ed.)
Hannan, Barbara. The Riddle of the World: A Reconsideration of Schopenhauer's Philosophy. Oxford University Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.