Gaarder, Jostein, 1952- Sophie's world : a novel about the history of philosophy / Jostein Gaarder ; translated by Paulette Møller. - New York : Farrar, Straus, Giroux, 2007. - xi, 518 pages ; 21 cm. Includes index. ISBN: 9780374530716 LC Class. No.: PT8951.17. / A17 S2007