Vita Minkhatul Fahria, et al. “The Effect of Discounts, Free Shipping, and Product Quality on Lifebouy Soap Purchase Decisions in Semarang City Trough E-Commerce Shopee”. Asian Bulletin of Digital Economics and Business, vol. 2, no. 1, June 2026, pp. 5-8, https://www.journal.uruborospublishing.com/index.php/abdeb/article/view/36.