Polsan, N. (2021). A Comparative Study of Grades 10 and 11 Students’ Motivation for Learning English as a Foreign Language under Gamification and Teacher-Centered Activities at a Private School in Bangkok. AU Hybrid International Conference 2024 on " Entrepreneurship & Sustainability in the Digital Era" Under the Theme of "People Centric Knowledge in Intelligence World" , 2(1), 248-257. Retrieved from http://www.assumptionjournal.au.edu/index.php/icesde/article/view/5744