SISTEM INFORMASI PENJUALAN TOKO MAINAN BERBASIS WEB MENGGUNAKAN METODE WATERFALL. VARIABLE RESEARCH JOURNAL, [S. l.], v. 3, n. 03, p. 461–468, 2026. Disponível em: https://variablejournal.my.id/index.php/VRJ/article/view/343.. Acesso em: 28 jul. 2026.