Helmawati H, Muchtar HS, Suryana A, Mulyati M. The Role of Principal’s Instructional Leadership in Improving Teacher Performance: A Case Study at SMPN 3 Baleendah. Visionary [Internet]. 2025 Feb. 7 [cited 2025 Sep. 30];13(1):40-6. Available from: https://ojspanel.undikma.ac.id/index.php/visionary/article/view/13757