Cita APA (7a ed.)

Gaarder, J., & translated by Paulette Moller. (2004). Sophie's world: Novel about the history of philosophy. Farrar.

Cita Chicago Style (17a ed.)

Gaarder, Jostein, y translated by Paulette Moller. Sophie's World: Novel About the History of Philosophy. New York: Farrar, 2004.

Cita MLA (9a ed.)

Gaarder, Jostein, y translated by Paulette Moller. Sophie's World: Novel About the History of Philosophy. Farrar, 2004.