JENIS-JENIS BULLYING DAN PENANGANANNYA DI SD N MANGONHARJO KOTA SEMARANG. jurnal, sinektik [Internet]. 2019 Dec. 3 [cited 2026 Oct. 9];2(1):106-1. Available from: https://ejurnal.unisri.ac.id/index.php/sin/article/view/2983