INOM NASUTION. KOMPETENSI GURU DAN PERANAN KEPALA SEKOLAH. Visipena, [S. l.], v. 2, n. 2, p. 51–57, 2011. DOI: 10.46244/visipena.v2i2.46. Disponível em: https://ejournal.bbg.ac.id/index.php/visipena/article/view/46. Acesso em: 3 aug. 2026.