Madila, Lina. “Pelatihan Berperilaku Asertif Untuk Meningkatkan Keterampilan Prevensi Tindakan Bullying Di SMP Islam Alma’mur Jakarta Pusat”. Journal of Psychological Perspective 1, no. 2 (October 12, 2019): 41–48. Accessed June 26, 2026. https://ukinstitute.org/journals/jopp/article/view/joppv1i206.