PENINGKATKAN KINERJA GURU MELALUI SUPERVISI KEPALA SEKOLAH DI SMP NEGERI 7 SIMPANG HILIR. JISIP [Internet]. 2022 Nov. 15 [cited 2026 Sep. 28];6(4). Available from: https://ejournal.mandalanursa.org/index.php/JISIP/article/view/3881