Hubungan Perilaku Bullying terhadap Sikap Sosial Siswa Kelas IV SD Swakarya Medan. TERPADU [Internet]. 2023 Mar. 4 [cited 2026 Nov. 5];1(1):1-9. Available from: https://pelitaaksara.or.id/index.php/terpadu/article/view/1