Khemtong, Rerngsak. “Participation in Activities of Students’ Suphanburi Vocational College”. Vocational Education Central Region Journal 2, no. 1 (June 30, 2018): 70–75. Accessed May 5, 2024. https://so06.tci-thaijo.org/index.php/IVECJournal/article/view/246494.