Boubli, J. P., M. N. F. Da Silva, M. V. Amado, T. Hrbek, F. B. Pontual & I. P. Farias. (2008). «A taxonomic reassessment of black uakari monkeys, Cacajao melanocephalus group, Humboldt (1811), with the description of two new species» International Journal of Primatology 29: 723–749. doi:10.1007/s10764-008-9248-7..
Meldrum, D.; Lemelin, J., P.. (2005). «Axial skeleton of Cebupithecia sarmientoi (Pitheciinae, Platyrrhini) from the Middle Miocene of La Venta, Colombia» American Journal of Primatology 25 (2): 69–89. doi:10.1002/ajp.1350250202..