ANGGRAINI, D. Analisis Pengawasan Sistem Pengajaran di Edu Smart Learning Center Medan. Jurnal ILMAN (Jurnal Ilmu Manajemen), [S. l.], v. 7, n. 1, p. 19-27, 2019. DOI: 10.35126/ilman.v7i1.42. Disponível em: https://journals.stimsukmamedan.ac.id/index.php/ilman/article/view/42. Acesso em: 21 apr. 2026.