Michael, K. L., G. Lietz, N. Noicharoen, and N. Natee. “English Communication Challenges and Coping Strategies of Thai Call Center Staff in a European Airline Group”. International Journal of Multidisciplinary in Management and Tourism, vol. 9, no. 2, Jan. 2026, pp. 223-32, doi:10.14456/ijmmt.2025.15.