Chuanmongkholjaroen, S. ., and C. . Tayjasanant. “Code-Switching and Attitude of Teachers and Students in Talented Program in a Secondary School”. KKU Research Journal (Graduate Studies) Humanities and Social Sciences, vol. 8, no. 1, Apr. 2020, pp. 103-15, https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/241441.