Morrow, Jeffrey Stewart. “The Influence of English Communication Ability on Income in Tourist Industry Frontline Employees of Siem Reap, Cambodia”. Almatourism - Journal of Tourism, Culture and Territorial Development 8, no. 15 (January 1, 2017): 38–55. Accessed October 5, 2022. https://almatourism.unibo.it/article/view/6299.