“Revitalization of Marginal Land Utilization From Former Coal Mining in Nagari Muaro Sopan, Padang Laweh District, Dharmasraya Regency”. Riwayat: Educational Journal of History and Humanities 9, no. 1 (January 23, 2026): 522–536. Accessed February 4, 2026. https://ejournal.yaydi.com/index.php/riwayat/article/view/259.