The Effect of Group Counseling Using the Behavior Contract Technique on Verbal Bullying Among Eighth-Grade Students at SMP Negeri 1 Percut Sei Tuan. Cakrawala Sekol. J. Multidiscip. Sch. Educ. [Internet]. 2026 Oct. 2 [cited 2026 Oct. 9];1(3 September):1-14. Available from: https://esp-journal.com/index.php/cakrawala-sekolah/article/view/395