Santosa, Yanto, SiregarJulius Paolo, Dones Rinaldi, and RahmanDede Aulia. “Faktor–Faktor Penentu Keberhasilan Pelepasliaran Orangutan Sumatera (Pongo Abelii) Di Taman Nasional Bukit Tigapuluh”. Jurnal Ilmu Pertanian Indonesia 17, no. 3 (August 24, 2014): 186-191. Accessed April 17, 2024. https://journal.ipb.ac.id/index.php/JIPI/article/view/8344.