Yana, Suci Pitri, Nurhanifah Nurhanifah, Rasyiidha Witra Ramadhan, and Mhd Rasyid Syaf Lubis. “Evaluating a School-Based Anti-Bullying Intervention: A Case Study from North Sumatra”. PPSDP International Journal of Education 4, no. 2 (October 6, 2025): 925–936. Accessed June 17, 2026. https://ejournal.ppsdp.org/pijed/article/view/614.