APA Edition Citation

Gaarder, J., & Møller, P. (2003). Sophie's world: A novel about the history of philosophy. Orion Books.

Chicago Edition Citation

Gaarder, Jostein, and Paulette Møller. Sophie's World: A Novel About the History of Philosophy. London: Orion Books, 2003.

MLA Edition Citation

Gaarder, Jostein, and Paulette Møller. Sophie's World: A Novel About the History of Philosophy. Orion Books, 2003.

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