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EFEKTIVITAS INTERVENSI PSIKOLOGIS TERHADAP KENAKALAN SISWA DI MAS MUHAMMADIYAH 1 MEDAN. Sindoro [Internet]. 2025 Sep. 25 [cited 2026 Oct. 3];17(11):31-40. Available from: https://cibjournal.com/index.php/sindoro/article/view/52