YUSUF, D.; SRISULISTIOWATI, D. B. SISTEM INFORMASI PENJUALAN PADA UNIT TOKO KOPERASI PEGAWAI UBJ BERBASIS ANDROID. JSI (Jurnal sistem Informasi) Universitas Suryadarma, [S. l.], v. 6, n. 2, p. 133–146, 2021. DOI: 10.35968/jsi.v6i2.321. Disponível em: https://journal.universitassuryadarma.ac.id/index.php/jsi/article/view/321. Acesso em: 11 sep. 2025.