NARGIS, Syarifah; NISWANTO; ISMAIL; IBRAHIM; FIRMANSYAH, Juli. The Managerial Competence of School Principals in Improving the Quality of Secondary Education. Nidhomul Haq : Jurnal Manajemen Pendidikan Islam, [S. l.], v. 9, n. 3, p. 542–553, 2024. DOI: 10.31538/ndhq.v9i3.1. Disponível em: https://nidhomulhaq.uacmjk.ac.id/index.php/ndh/article/view/1. Acesso em: 1 jul. 2025.