Prasetyo, Didik, Yokyok Hadiprakarsa, Wanda Kuswanda, and Jito Sugardjito. “Population Status of Tapanuli Orangutan (Pongo Tapanuliensis) Within the Renewable Energy Development and Its Management Implications”. Forest and Society 5, no. 2 (September 7, 2021): 478-493. Accessed April 19, 2024. https://journal.unhas.ac.id/index.php/fs/article/view/13529.