d’Angella, Francesca, and Manuela De Carlo. “The Maturity of Tourism Networks: An Exploratory Study”. Symphonya. Emerging Issues in Management, no. 3 (October 26, 2017): 59–70. Accessed July 3, 2022. https://symphonya.unicusano.it/article/view/2017.3.06dangella.decarlo.