TYBURSKI, Włodzimierz. Ethical Assumptions of Sustainable Development Education. Problemy Ekorozwoju, [S. l.], v. 2, n. 1, p. 41–47, 2007. Disponível em: https://ph.pollub.pl/index.php/preko/article/view/4650. Acesso em: 22 nov. 2024.