HARMALIS, H. The Effectiveness of Content Mastery Services with a Muhasabah Approach in Reducing Bullying Behavior in Students. PPSDP International Journal of Education, [S. l.], v. 2, n. 2, p. 193–202, 2023. DOI: 10.59175/pijed.v2i2.122. Disponível em: https://ejournal.ppsdp.org/index.php/pijed/article/view/122. Acesso em: 23 jul. 2026.