Nindya Adhisty. “The Effectiveness of Public Service Centers in Medan City, North Sumatra Province”. Jurnal Ilmiah Multidisiplin Indonesia (JIM-ID) 4, no. 7 (August 13, 2025): 693–705. Accessed May 3, 2026. https://ejournal.seaninstitute.or.id/index.php/esaprom/article/view/7157.