Chambairak, Chariya, and Assoc. Prof. Dr. Sombat Tayraukham. “Development of Training Program for Preventing Bad -Purpose Internet of Students in Mathayomsuksa 4”. Journal of Research and Development Institute Rajabhat Maha Sarakham University 6, no. 2 (December 30, 2019): 91–100. Accessed May 6, 2024. https://so03.tci-thaijo.org/index.php/rdirmu/article/view/233157.