Rattanasaeng, Kanpajee. 2021. “Developing the Flipped Classroom Model for Improving English Communication Skill of Thai EFL Undergraduates through the Presentation Mode”. NKRAFA Journal of Humanities and Social Sciences 9 (November):121-30. https://so04.tci-thaijo.org/index.php/KANNICHA/article/view/250820.