Felipe Ennes Silva, João Valsecchi do Amaral, Christian Roos, Mark Bowler, Fabio Röhe: Molecular phylogeny and systematics of bald uakaris, genus Cacajao Lesson, 1840 (Primates: Pitheciidae), with the description of a new species. In: Molecular Phylogenetics and Evolution. Mai 2022, S.107509, doi:10.1016/j.ympev.2022.107509.
Jean P. Boubli, Maria Nazareth F. da Silva, Manuella V. Amado, Tomas Hrbek, Francisco Boavista Pontual, Izeni P. Farias: A Taxonomic Reassessment of „Cacajao melanocephalus“ Humboldt (1811), with the Description of Two New Species. International Journal of Primatology, Bd. 29, 3, S. 723–741, 2008 ISSN0164-0291