Bjorklund, D. F. (2012). Children's thinking: Cognitive development and individual differences (Fifth edition, International edition.). Wadsworth Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Bjorklund, David F. Children's Thinking: Cognitive Development and Individual Differences. Fifth edition, International edition. Australia: Wadsworth Cengage Learning, 2012.
Lua MLA (9ú heag.)Bjorklund, David F. Children's Thinking: Cognitive Development and Individual Differences. Fifth edition, International edition. Wadsworth Cengage Learning, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.