APA (7th ed.) Citation

Schopenhauer, A. (2004). On the suffering of the world. Penguin Books.

Chicago Style (17th ed.) Citation

Schopenhauer, Arthur. On the Suffering of the World. London: Penguin Books, 2004.

MLA (9th ed.) Citation

Schopenhauer, Arthur. On the Suffering of the World. Penguin Books, 2004.

Warning: These citations may not always be 100% accurate.