Fonghoi, Watcharin, Chamaipak Tayjasanant, and Singhanat Nomnian. 2019. “In-Service Secondary School English Language Teachers’ Instructional Practices, Challenges, and Their Training Needs: A Focus Group Interview Study”. Princess of Naradhiwas University Journal of Humanities and Social Sciences 6 (2):152-65. https://so05.tci-thaijo.org/index.php/pnuhuso/article/view/173972.