Pardede, Piki Darma Kristian. “Implementation of Law No. 40 of 2009 Concerning Youth Development Policy in Medan City”. Journal of Governance and Public Policy 7, no. 2 (June 26, 2020): 139–149. Accessed September 1, 2025. https://journal.umy.ac.id/index.php/GPP/article/view/8880.