Permana, Ngadi, Yessica Amelia, and Muhammad Rizal. “The Economics of Auto-Delivery: A Qualitative Exploration of Inventory Management and Profitability in Subscription Services”. International Journal of Business, Marketing, Economics & Leadership (IJBMEL) 1, no. 4 (November 28, 2024): 55–70. Accessed September 2, 2025. https://jurnal-mnj.stiekasihbangsa.ac.id/index.php/IJBMEL/article/view/253.