MARCINIAK, Adam. The Review of International Regulations in the Field of Sustainable Tourism Development. Comparative Economic Research. Central and Eastern Europe, Poland, v. 11, n. 1-2, p. 159–176, 2008. DOI: 10.18778/1508-2008.11.10. Disponível em: https://www.czasopisma.uni.lodz.pl/CER/article/view/21530. Acesso em: 8 aug. 2026.