APA Style

Smith, R. (2012). The 39 Clues , Cahills vs. Vespers , book four of Shatterproof (4 ed.). New York: Scholastic Inc..

MLA Style

Smith, Roland. "The 39 Clues , Cahills vs. Vespers , book four of Shatterproof". 4 ed. New York: Scholastic Inc., 2012. Text.