Cita APA

Gaarder, J., & Ml̜ler, P. (1995). Sophie's world: A novel about the history of philosophy. Phoenix.

Citación estilo Chicago

Gaarder, Jostein, and Paulette Ml̜ler. Sophie's World: A Novel About the History of Philosophy. London: Phoenix, 1995.

Cita MLA

Gaarder, Jostein, and Paulette Ml̜ler. Sophie's World: A Novel About the History of Philosophy. Phoenix, 1995.