Farhaan, M, D Prasmanto, A Sumardi, S Rahayu, and Theresia Lumban Gaol. “Designing Android-Based Online Sales Applications to Increase Sales and Marketing”. International Journal of Education, Information Technology, and Others 4, no. 2 (July 1, 2021): 275-281. Accessed April 29, 2026. https://jurnal.peneliti.net/index.php/IJEIT/article/view/763.