GARBAČIAUSKIENĖ , M. Some theoretical questions of studying the development of conceptual thinking. Psichologija, [S. l.], v. 1, p. 13–23, 1980. DOI: 10.15388/Psichol.1980.1.9154. Disponível em: https://test.zurnalai.vu.lt/psichologija/article/view/9154. Acesso em: 26 oct. 2025.