Fitriyani, Anisa. “Factors Affecting Online Purchasing Power : Analysis of Sales Increase, Tight Competition and Price (Strategic Management Literature Review)”. Siber International Journal of Education Technology (SIJET) 2, no. 2 (April 29, 2025): 65–71. Accessed May 17, 2025. https://review.e-siber.org/SIJET/article/view/160.