Ekwarangkoon, P. . ., C. . . Chuntra, and K. . . Nugkim. “Guidelines for the Promotion of Teaching Behaviors of Teachers at Basic Education Level Towards Developing Student Learning Achievement”. Dusit Thani College Journal, vol. 12, no. 3, Apr. 2020, pp. 366-81, https://so01.tci-thaijo.org/index.php/journaldtc/article/view/240973.