DZWONKOWSKA, D. The principle of sustainable development in tourism. Studia Ecologiae et Bioethicae, [S. l.], v. 9, n. 2, p. 23–41, 2011. DOI: 10.21697/seb.2011.9.2.02. Disponível em: https://czasopisma.uksw.edu.pl/index.php/seb/article/view/3090. Acesso em: 22 jul. 2024.