Almizri, W. et al. 2024. E-Book-Based Group Counseling with Contingency Contracting to Reduce Bullying Among Islamic Boarding School Teenagers. AL-ISHLAH: Jurnal Pendidikan. 16, 4 (Dec. 2024), 4779–4789. DOI:https://doi.org/10.35445/alishlah.v16i4.5940.