Cita APA (7a ed.)

Gaarder Jostein. (2015). Sophies World. Weindenfuld.

Cita Chicago Style (17a ed.)

Gaarder Jostein. Sophies World. New York: Weindenfuld, 2015.

Cita MLA (9a ed.)

Gaarder Jostein. Sophies World. Weindenfuld, 2015.