MICHALSKA-DUDEK, Izabela; RAPACZ, Andrzej. The Loyalty Measurement Problems of Travel Agencies’ Customers in Poland. DEMO, Poland, v. 5, n. 4, p. 242–264, 2017. DOI: 10.18559/SOEP.2017.4.12. Disponível em: https://ojs34.fimagis.pl/index.php/demo/article/view/993. Acesso em: 18 apr. 2026.