Janejob, P., and J. Srisomphun. “The Development of Computer Assisted Instruction With Demonstration Techniques Title Multivi-Brator Circuit in Pulse and Switching Circuit Course”. Vocational Education Central Region Journal, vol. 3, no. 1, June 2019, pp. 1-9, https://so06.tci-thaijo.org/index.php/IVECJournal/article/view/246527.