Roosdiono Roosdiono, and Astri Ghina. “The Development of WhatsApp-Based Technology Products Using the Design Thinking Approach : Case Study of Finpay Link at PT Finnet Indonesia”. International Journal of Economics and Management Sciences, vol. 2, no. 1, Jan. 2025, pp. 139-60, doi:10.61132/ijems.v2i1.428.