JOHN, A. H. Individual Behavior Of Female Sumatran Orangutan (Pongo abelii L.) With Management System In Siantar Zoo. International Journal of Ecophysiology, [S. l.], v. 3, n. 1, p. 16–26, 2022. DOI: 10.32734/ijoep.v3i1.10017. Disponível em: https://talenta.usu.ac.id/ijoep/article/view/10017. Acesso em: 26 aug. 2025.