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Raudhah Carolina Herera Nasution; M. Daffa Al-Azka Harahap; Qeisya Hafizhah Malvira; Kerisna Chairsyah Abdillah Harahap; Rizky Ramadhan. EFFECTIVENESS OF ANTI-BULLYING SCHOOL PROGRAM: PERCEPTION SURVEY OF GRADE XII STUDENTS AT SMAS AL AZHAR MEDAN. IJERLAS 2024, 4, 1852-1858.