Khoirunnisa Pohan, et al. “Bullying Behavior and Its Consequences at the TPI Purbasinomba Islamic Boarding School, North Padang Lawas”. Indonesian Journal of Islamic Education, vol. 1, no. 1, July 2026, pp. 136-50, https://journal.maalahliyah.sch.id/index.php/ijie/article/view/585.