Elsa Gultom, Yohny Anwar. THE INFLUENCE OF LEADERSHIP, SUPERVISION AND WORK DISCIPLINE ON TEACHER PERFORMANCE AT TALITAKUM PRIVATE SMP HIGH SCHOOL MEDAN. IJSET [Internet]. 2024 Aug. 14 [cited 2026 Apr. 25];3(9):1545-9. Available from: https://ijset.org/index.php/ijset/article/view/543