Douša, M. (2019) „RELATION COMPARISON OF SELECTED RAILWAY TRANSPORT COMPANIES USING THE SERVQUAL METHOD", Perner’s Contacts, 14(4), s. 12–25. Dostupné z: https://pernerscontacts.upce.cz/index.php/perner/article/view/435 (Viděno: 25 duben 2024).