ZAJADACZ , Alina; STROIK , Ewa; ŚNIADEK , Joanna. The Problem of Ensuring the Quality of Services in Tourist Destinations. French, Spanish and German Solutions. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 6, n. 10, p. 188–210, 2018. DOI: 10.18559/SOEP.2018.10.12. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3878. Acesso em: 3 sep. 2026.