Suwannatrai, L., N. Thumawongsa, and S. Chumpavan. “Instructional Methods Used in English Teaching As a Foreign Language (EFL) Classroom Practice at the University Level in Thailand”. Rajapark Journal, vol. 17, no. 51, Apr. 2023, pp. 1-17, https://so05.tci-thaijo.org/index.php/RJPJ/article/view/258836.