KOCISZEWSKI, Piotr. Selected Elements of the Potential of the Competitiveness of Travel Agencies in the Tourism Market of the Retired in Poland. DEMO, Poland, v. 5, n. 4, p. 208–227, 2017. DOI: 10.18559/SOEP.2017.4.10. Disponível em: https://ojs34.fimagis.pl/index.php/demo/article/view/991. Acesso em: 18 apr. 2026.