Boubli, J.P. 2002. Western extension of the range of bearded sakis: a possible new taxon of Chiropotes sympatric with Cacajao in the Pico da Neblina National Park, Brazil. Neotropical Primates. 10, 1 (Apr. 2002), 1–4. DOI:https://doi.org/10.62015/np.2002.v10.495.