Ban, O.I. et al. (2015) „Empirical Social Research to Identify Clusters of Characteristics that Underlie the Online Evaluation of Accommodation Services”, Revista de Cercetare si Interventie Sociala, 50, pp. 293–308. Disponibil la: https://www.rcis.ro/journal/article/view/2211-empirical-social-research-to-identify-clusters-of (Data accesării: 6 noiembrie 2026).