Hurek, Jubelia Ayu Ebong, and David Humala Sitorus. “The Influence of Promotions and Prices on Purchase Decisions at Shopee (Case Study in Tanjung Piayu Community, Batam City)”. eCo-Buss 6, no. 2 (December 10, 2023): 810–820. Accessed July 3, 2024. https://jurnal.kdi.or.id/index.php/eb/article/view/914.