Suwandi, S., L. Magdalena, A. R. Hidayat, W. N. Dewi, and I. Kartika. “Decision Support System Determines The Best Customers for Giving Rewards Using Weighted Product Method”. Proceeding International Conference on Religion, Science and Education, vol. 4, Apr. 2025, pp. 1103-8, https://sunankalijaga.org/prosiding/index.php/icrse/article/view/1546.