Pengaruh Supervisi Kepala Sekolah Terhadap Disiplin Kerja Guru di SMA Negeri 1 Balige”. JMPT [Internet]. 2025 Feb. 15 [cited 2025 Jul. 20];3(04). Available from: https://ourhope.biz.id/ojs/index.php/JP/article/view/84