PAPALIA, D. E., OLDS, S. W., & FELDMAN, R. D. (2002). A child's world: Infancy through adolescence.-- ed.9. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)PAPALIA, Diane E., Sally Wendkos OLDS, agus Ruth Duskin FELDMAN. A Child's World: Infancy Through Adolescence.-- Ed.9. Boston: McGraw-Hill, 2002.
Lua MLA (9ú heag.)PAPALIA, Diane E., et al. A Child's World: Infancy Through Adolescence.-- Ed.9. McGraw-Hill, 2002.
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