Bellini, Nicola, and Laetitia Convert. “The Concierge. Tradition, Obsolescence and Innovation in Tourism”. Symphonya. Emerging Issues in Management, no. 2 (May 16, 2017): 17–25. Accessed June 17, 2026. https://symphonya.unicusano.it/article/view/2016.2.03bellini.convert.