Hutasuhut, Ikhwan Kurnia, Marlon Sihombing, and Linda Trimurni Maas. “Youth Participation in Management of Deli Watershed (DAS Deli) in Medan”. Journal of Environmental and Development Studies 3, no. 1 (March 16, 2022): 47–58. Accessed June 19, 2026. https://idjpcr.usu.ac.id/jeds/article/view/8275.