“The Effect of Principal’s Leadership and Teacher’s Professionalism on Teacher’s Performance”. JMKSP (Jurnal Manajemen, Kepemimpinan, dan Supervisi Pendidikan) 7, no. 2 (June 12, 2022): 809–818. Accessed June 21, 2026. https://jurnal.univpgri-palembang.ac.id/index.php/JMKSP/article/view/12097.