Multi-Actor Collaboration in Waste Governance: A Study of Local Government, Private Sector, and Community Engagement in Medan, Binjai, Deli Serdang, and Karo, North Sumatra. International Journal of Economics Management and Social Science , [S. l.], v. 9, n. 2, p. 424–435, 2026. Disponível em: https://journal.salewangang.net/ijemss/article/view/126. Acesso em: 7 jul. 2026.