PERWITASARI-FARAJALLAH, D. Discrimination of two species of Orangutans (Pongo sp.): A rapid protocol for rehabilitation centres and zoos. BIOTROPIA - The Southeast Asian Journal of Tropical Biology, [S. l.], v. 16, n. 2, 2011. DOI: 10.11598/btb.2009.16.2.52. Disponível em: https://journal.biotrop.org/index.php/biotropia/article/view/52. Acesso em: 28 jan. 2023.