THE ROLE OF THE SCHOOL PRINCIPLE AS SUPERVISOR IN IMPROVING TEACHER PROFESSIONALITY RA NAWA KARTIKA VIII SIDOLAJU. JOURNAL J-MPI : JURNAL MANAJEMEN PENDIDIKAN, PENELITIAN DAN KAJIAN KEISLAMAN, [S. l.], v. 2, n. 1, p. 31–36, 2023. Disponível em: https://www.ejournal.stitmuhngawi.ac.id/index.php/J-MPI/article/view/104. Acesso em: 28 mar. 2026.