STOŠKUS, Krescencijus Antanas. Formation of Thinking and Its Forms. Problemos, [S. l.], v. 16, p. 75–89, 1975. DOI: 10.15388/Problemos.1975.16.5599. Disponível em: https://www.journals.vu.lt/problemos/article/view/5599.. Acesso em: 17 aug. 2024.