Berk, L. E. (2008). Infants, children, and adolescents (6th ed.). Person.
Lua i Stíl Chicago (17ú heag.)Berk, Laura E. Infants, Children, and Adolescents. 6th ed. Boston: Person, 2008.
Lua MLA (9ú heag.)Berk, Laura E. Infants, Children, and Adolescents. 6th ed. Person, 2008.
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