Jamsai, Pattaraporn, and Suteera Boonnak. “Factors related to verbal bullying in elementary school students”. Kasetsart Journal of Social Sciences 44, no. 3 (September 15, 2023): 877–884. accessed December 5, 2025. https://so04.tci-thaijo.org/index.php/kjss/article/view/267919.