Laeheem, Kasetchai, and Utit Sungkharat. 2012. “Development of Screening Inventory for Students at Risk of Exposure to Bullying Behavior in Islamic Private Schools, Songkhla Province”. Kasetsart Journal of Social Sciences 33 (2):175-87. https://so04.tci-thaijo.org/index.php/kjss/article/view/246808.