Poolperm, R., and A. Boonmoh. “Differences in Thai Students’ Anxiety When Speaking English in Onsite and Online Classrooms”. THAITESOL Journal, vol. 37, no. 1, Feb. 2024, pp. 1-23, https://so05.tci-thaijo.org/index.php/thaitesoljournal/article/view/270772.