Suhandono E, Putra ATS. Sistem Informasi Loyalty Program di Layanan Penjualan Produk Software pada Bagian Point of Sales PT. XYZ. ASIIMETRIK [Internet]. 2021Jan.31 [cited 2024May4];3(1):17-8. Available from: https://journal.univpancasila.ac.id/index.php/asiimetrik/article/view/1647