Hamka, Hamka. “The Role of Principals on Teacher Performance Improvement in a Suburban School”. QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama 15, no. 1 (May 9, 2023): 371–380. Accessed February 7, 2026. https://ejournal.insuriponorogo.ac.id/index.php/qalamuna/article/view/2409.