Budiman, Fahri, Esther Sorta Mauli Nababan, and T. Alief Aththorick. “Identification of Factors and Variables in Orangutan Habitat Conservation in Central Tapanuli Using DPSIR Approach”. Journal of Environmental and Development Studies 6, no. 01 (April 21, 2025): 001–010. Accessed May 18, 2026. https://talenta.usu.ac.id/jeds/article/view/18152.