Gaya APA

Papalia, D, E., Feldman, R, D. (2011). A Child's World : Infancy through Adolescence 12'th Ed. (12). New York: McGraw-Hill Companies.

Gaya MLA

Papalia, Diane, E.., Feldman, Ruth, Duskin. "A Child's World : Infancy through Adolescence 12'th Ed.". 12 New York: McGraw-Hill Companies, 2011. Text.