(EN) D.E. Wilson e D.M. Reeder, Rhinopithecus avunculus, in Mammal Species of the World. A Taxonomic and Geographic Reference, 3ª ed., Johns Hopkins University Press, 2005, ISBN0-8018-8221-4.
doi.org
Andie Ang et al.: No evidence for mitochondrial genetic variability in the largest population of critically endangered Tonkin snub-nosed monkeys in Vietnam. In: Primates. Volume 57, N° 4, 2016, pgg. 449-453, doi:10.1007/s10329-016-0571-x