RUBINSTEIN, Sergei. The principle of creative self-activity. Psyhology & society, [S. l.], n. 2, p. 97–101, 2021. DOI: 10.35774/pis2021.02.097. Disponível em: https://pis.wunu.edu.ua/index.php/enpis/article/view/1141.. Acesso em: 7 may. 2024.