Barus NA, Barus NA, Barus MI. SUPERVISI KEPALA SEKOLAH TERHADAP KEDISIPLINAN DAN KINERJA GURU DI SMP AL-WASHLIYAH 26 MEDAN. EDB [Internet]. 2020Dec.17 [cited 2024Dec.4];1(1):44-9. Available from: https://jurnal.stain-madina.ac.id/index.php/eduglobal/article/view/374