ОЛІЙНИК, О. Theoretical approaches in the study of intelligence and thinking older preschoolers. Proceedings of Kyiv Aviation Institute. Series: Pedagogy. Psychology, [S. l.], v. 2, n. 2, p. 105, 2012. DOI: 10.18372/2411-264X.2.2117. Disponível em: http://jrnl.kai.edu.ua/index.php/VisnikPP/article/view/2117. Acesso em: 14 jun. 2026.