Nguyen, Thi Dung, and Prannapha Modehiran. “English for Tour Operators and Tour Guides: Learning Needs from stakeholders’ Voices”. Scholar: Human Sciences 15, no. 2 (December 13, 2023): 207-217. Accessed May 24, 2025. https://assumptionjournal.au.edu/index.php/Scholar/article/view/7252.