Kongsaen, Kanisarath, and Angkana Onthanee. “The Delvelopment of Learning Activities Based on Flipped Classroom to Promote English Listening and Speaking Proficiency for Grade 6”. Academic MCU Buriram Journal 7, no. 1 (June 13, 2022): 115–129. Accessed April 25, 2024. https://so06.tci-thaijo.org/index.php/ambj/article/view/251311.