Chambairak C, Tayraukham APDS. Development of Training Program for Preventing Bad -Purpose Internet of Students in Mathayomsuksa 4. JDSC [internet]. 2019 Dec. 30 [cited 2026 Aug. 26];6(2):91-100. available from: https://so03.tci-thaijo.org/index.php/rdirmu/article/view/233157