PENCARELLI, Tonino; DINI, Mauro. The Tourism Intermediation System: The Relationship between Travel Agencies and Tour Operators. International Journal of Economic Behavior (IJEB), [S. l.], v. 6, n. 1, p. 97–112, 2016. DOI: 10.14276/2285-0430.1911. Disponível em: https://journals.uniurb.it/index.php/ijmeb/article/view/1911. Acesso em: 14 nov. 2025.