Panggabean I, Wahyudi A. Implementasi Program Roots Anti Perundungan di SMK Negeri 3 Pematangsiantar. SJRI [Internet]. 2025 Jul. 30 [cited 2026 Feb. 9];4(7):676-87. Available from: https://ejournal.nusantaraglobal.ac.id/index.php/sentri/article/view/4275