Tarigan, Feriani Astuti. “Perancangan Sistem Informasi Administrasi Pada Gmi Medan Berbasis Android Online”. Jurnal TIMES 8, no. 1 (April 23, 2020): 48–53. Diakses Mei 12, 2024. http://ejournal.stmik-time.ac.id/index.php/jurnalTIMES/article/view/607.