Raksapakdee , S. ., and D. Chaipichit. “The Development of Year-2 Vocational Certificate Students’ Operational Skills in the Subject of Exterior Electrical System Installation Through Direct Instruction Model Along with the Think-Pair- Share Technique”. Journal of Modern Learning Development, vol. 7, no. 7, Aug. 2022, pp. 46-58, https://so06.tci-thaijo.org/index.php/jomld/article/view/256178.