Hurley, Alice, and Alison Cotton. “Foraging Enrichment Affects Behaviour and Enclosure Utilisation in Captive Male Gelada Theropithecus Gelada”. Journal of Zoo and Aquarium Research 10, no. 3 (July 31, 2022): 129–138. Accessed May 3, 2024. https://jzar.org/jzar/article/view/580.