Muntasiyah M, Sukirman S, Suyatno S. Bullying Prevention Management Based on Child-Friendly Schools at SD Muhammadiyah Bayen Sleman. EDUSOSHUM [Internet]. 2026Aug.19 [cited 2026Aug.19];6(2):1668-79. Available from: https://www.edusoshum.org/index.php/EDU/article/view/564