BERNADKIEWICZ, A. The ways of expressing ecological education. Studia Ecologiae et Bioethicae, [S. l.], v. 5, n. 1, p. 252–528, 2007. DOI: 10.21697/seb.2007.5.1.40. Disponível em: https://czasopisma.uksw.edu.pl/index.php/seb/article/view/7670. Acesso em: 19 may. 2024.