Kaewkascholkul, N., and N. Jaturapitakkul. “Thai Teacher’s Corrective Feedback on Adult Learners’ Errors in Speaking”. THAITESOL Journal, vol. 36, no. 2, Nov. 2023, pp. 39-60, https://so05.tci-thaijo.org/index.php/thaitesoljournal/article/view/269075.