Boubli, J. P.; da Silva, M. N. F.; Amado, M. V.; Hrbek, T.; Pontual, F. B.; Farias, I. P. (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.
Barnett, A. A.; Volkmar de Castilho, C.; Shapley, R. L.; Anicácio, A. (2005). "Diet, habitat selection and natural history of Cacajao melanocephalus ouakary in Jaú National Park, Brazil". International Journal of Primatology. 26 (4): 949–969. doi:10.1007/s10764-005-5331-5.
Eaglen, R. H. (1984). "Incisor size and diet revisited: the view from a platyrrhine perspective". American Journal of Physical Anthropology. 64 (3): 263–275. doi:10.1002/ajpa.1330640308. PMID6476100.
Kinzey, W. G. (1992). "Dietary and dental adaptation in the Pitheciinae". American Journal of Physical Anthropology. 88 (4): 499–514. doi:10.1002/ajpa.1330880406. PMID1503121.
Eaglen, R. H. (1984). "Incisor size and diet revisited: the view from a platyrrhine perspective". American Journal of Physical Anthropology. 64 (3): 263–275. doi:10.1002/ajpa.1330640308. PMID6476100.
Kinzey, W. G. (1992). "Dietary and dental adaptation in the Pitheciinae". American Journal of Physical Anthropology. 88 (4): 499–514. doi:10.1002/ajpa.1330880406. PMID1503121.