YANA, S. P.; NURHANIFAH, N.; RAMADHAN, R. W.; LUBIS, M. R. S. Evaluating a School-Based Anti-Bullying Intervention: A Case Study from North Sumatra. PPSDP International Journal of Education, [S. l.], v. 4, n. 2, p. 925–936, 2025. DOI: 10.59175/pijed.v4i2.614. Disponível em: https://ejournal.ppsdp.org/pijed/article/view/614. Acesso em: 17 jun. 2026.