Devina Rahmananda, Yuevelyn, Happy Karlina Marjo, and Herdi. “Application of Cognitive Behavior Therapy (CBT) to Increase Hardiness in Students Victims of Bullying in High School: Literature Study”. BICC Proceedings 2 (June 10, 2024): 37–45. Accessed May 31, 2026. https://biccproceedings.org/index.php/bicc/article/view/105.