Murniati Br Sitepu, Lilis Novitarum, Floresta Br Sitepu, Putri Indah Manalu. The Relationship of Peer Group Roles with Verbal Bullying at St. Peter High School Medan. JPIKes [Internet]. 2025 Jul. 3 [cited 2025 Oct. 21];5(2):81-95. Available from: https://journalshub.org/index.php/JPIKes/article/view/5466