1. Zhou J, Wei FW, Li M, et al. Hainan black-crested gibbon is headed for extinction. International Journal of Primatology. 2005;26(2):453-465
2. Liu ZH, Zhang YZ, Jiang HS, Southwick C. Population structure of Hylobates concolor in Bawanglin nature reserve, Hainan, China. American Journal of Primatology. 1989a;19:247-254
3. IUCN. IUCN Red List of Threatened Species. Gland, Switzerland & Cambridge, UK: IUCN; 2010. Available from: http://www.iucnredlist.org. Accessed February 20, 2011
4. Niu KF, Tan LC, Yang YQ. Altitudinal movements of Guizhou snub-nosed monkeys (Rhinopithecus brelichi) in Fanjingshan National Nature Reserve, China: Implications for conservation management of a flagship species. Folia Primatologica; International Journal of Primatology. 2010;81(4):233-244
5. Xiang ZF, Wang L, Huo S, Cui LW, Xiao W, Quan RC, et al. Distribution, status and conservation strategies of the black-and-white snub-nosed monkey Rhinopithecus bieti in Tibet. Oryx. 2007;41:525-531