Cita APA (7th ed.)

PAPALIA, D. E., OLDS, S. W., & FELDMAN, R. D. (2002). A child's world: Infancy through adolescence.-- ed.9. McGraw-Hill.

Cita Chicago (17th ed.)

PAPALIA, Diane E., Sally Wendkos OLDS, i Ruth Duskin FELDMAN. A Child's World: Infancy Through Adolescence.-- Ed.9. Boston: McGraw-Hill, 2002.

Cita MLA (9th ed.)

PAPALIA, Diane E., et al. A Child's World: Infancy Through Adolescence.-- Ed.9. McGraw-Hill, 2002.