Isti Antari. “The Relationship Bullying Incident With The Level of Adolescent Confidence at SMP Negeri 1 Banguntapan”. Jurnal Kesehatan Madani Medika (JKMM), Vol. 15, no. 02, Jan. 2025, pp. 133-4, doi:10.36569/jmm.v15i02.388.