“SUPERVISI KEPALA SEKOLAH TERHADAP KEDISIPLINAN DAN KINERJA GURU DI SMP AL-WASHLIYAH 26 MEDAN” (2020) Edu Global : Jurnal Pendidikan Islam, 1(1), pp. 44–59. Available at: https://jurnal.stain-madina.ac.id/index.php/eduglobal/article/view/374 (Accessed: 9 August 2026).