Cita APA (7a ed.)

Papalia, D. E. (1999). A child's world: Infancy throgh adolescence (8th ed.). WCB McGraw-Hill.

Cita Chicago Style (17a ed.)

Papalia, Diane E. A Child's World: Infancy Throgh Adolescence. 8th ed. Boston: WCB McGraw-Hill, 1999.

Cita MLA (9a ed.)

Papalia, Diane E. A Child's World: Infancy Throgh Adolescence. 8th ed. WCB McGraw-Hill, 1999.