Sirirut, Korn. “The Development of Learning Media on LED-TV of Vocational Certificate Students of Electronic Program”. Vocational Education Central Region Journal 1, no. 2 (December 30, 2017): 72–76. Accessed April 28, 2024. https://so06.tci-thaijo.org/index.php/IVECJournal/article/view/246475.