Peran Kepala Tata Usaha Dalam Meningkatkan Efisiensi Administrasi Sekolah Di Madrasah Aliyah Laboratorium Uinsu Medan. Riwayat: Educational Journal of History and Humanities, [S. l.], v. 8, n. 4, p. 311–318, 2026. DOI: 10.24815/riwayat.v8i4.102. Disponível em: https://ejournal.yaydi.com/index.php/riwayat/article/view/102. Acesso em: 4 feb. 2026.