↑Zinner, D.; Fickenscher, G.H.; Roos, C. (2013). Mittermeier, Russell A.; Rylands, Anthony B.; Wilson, Don E. (ed.). Handbook of the Mammals of the World: Volume 3, Primates. Lynx. hlm.709–710. ISBN978-8496553897.
↑Saj, Tania L. (2016). Rowe, Noel; Myers, Marc (ed.). All the World's Primates. Pogonias Press. hlm.546–547. ISBN9781940496061.