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Wasiyem Wasiyem, Syahrida Suryani Hasibuan, Tengku Muhammad Faris Nurfikri. Leadership Programs And Models AT SMP Negeri 31 Medan. IJHS [Internet]. 2024 Jan. 2 [cited 2024 May 18];4(1):11-9. Available from: https://ejurnal.politeknikpratama.ac.id/index.php/ijhs/article/view/3307