APA Citation

Gaarder. (1994). Sophie's world: A novel about the history of philosophy. New York: Farrar, Straus and Giroux.

Chicago Style Citation

Gaarder. Sophie's World: A Novel About the History of Philosophy. New York: Farrar, Straus and Giroux, 1994.

MLA Citation

Gaarder. Sophie's World: A Novel About the History of Philosophy. New York: Farrar, Straus and Giroux, 1994.

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