Chitprarop, Acharin, and Anawat Chitprarop. “The Development of English for Business Communication Lesson Plans Using Task- Based Learning Activities for Business Administration Undergraduates, Rajamangala University of Technology Lanna, Chiang Mai”. RMUTL Journal of Business Administration and Liberal Arts 9, no. 2 (December 27, 2021): 67–84. Accessed May 5, 2024. https://so05.tci-thaijo.org/index.php/balajhss/article/view/251513.