Sutriyawan, Agung, and Intan Permata Sari. 2020. “Perbedaan Focus Group Discussion Dan Brainstorming Terhadap Pencegahan Bullying Di Sekolah Menengah Pertama Negeri 2 Karangtengah ”. Window of Health : Jurnal Kesehatan 3 (1), 038-048. https://doi.org/10.33096/woh.v3i1.562.