Sutha, R., and K. . Hinon. “The Development of Instructional Package on Electrical Power System and Power Factor Improvement using MATLAB GUI for Vocational Certificate Students”. Journal of Technical and Engineering Education, vol. 16, no. 1, Jan. 2025, pp. 43-57, https://so10.tci-thaijo.org/index.php/FTEJournal/article/view/1325.