BATU BARA, B. P.; WAHYUDDIN, M. I.; ISKANDAR, A. Development of Online Academic Portal System Android Based on National University: Development of Online Academic Portal System Android Based on National University. Jurnal Mantik, [S. l.], v. 4, n. 1, p. 751-759, 2020. Disponível em: https://www.ejournal.iocscience.org/index.php/mantik/article/view/848. Acesso em: 3 sep. 2026.