Dini Maharani Wardana, Mohammad yusup, & Ricky Ramadhan. (2025). Design and Development of a Virtual Public Complaint Service System for the Medan City Cooperatives and Small and Medium Enterprises (UKM) Service Based on a Website. INFOKUM, 13(03), 534-547. Retrieved from https://seaninstitute.org/infor/index.php/infokum/article/view/2818