CYBULA, Piotr; ZAWISTOWSKA, Hanna. A Discussion about the Need for New Regulations in Tourism. DEMO, Poland, v. 5, n. 4, p. 29–49, 2017. DOI: 10.18559/SOEP.2017.4.2. Disponível em: https://ojs34.fimagis.pl/index.php/demo/article/view/983. Acesso em: 18 apr. 2026.