Nagamachi, C.Y., Pieczarka, J.C. and Barros, R.M.S. 1992. Karyotypic comparison among Cebuella pygmaea, Callithrix jacchus and C. emiliae (Callitrichidae, Primates) and its taxonomic implications. Genetica. Vol. 85, pp. 249-257.
Nagamachi, C.Y., Pieczarka, J.C., Barros, R.M.S., Schwarz, M., Muniz, J.A.P.C. and Mattevi, M.S. 1996. Chromosomal relationships and phylogenetic and clustering analyses on genus Callithrix, group argentata (Callitrichidae, Primates). Cytogenetics and Cell Genetics. Vol. 72, pp. 331-338.
Nagamachi, C.Y., Pieczarka, J.C., Schwarz, M., Barros, R.M.S. and Mattevi, M.S. 1997. Comparative chromosomal study of five taxa of genus Callithrix, group Jacchus (Platyrrhini, Primates). American Journal of Primatology. Vol. 41, pp. 53-60.
Natori, M. 1986. Interspecific relationships of Callithrix based on dental characters. Primates. Vol. 27, pp. 321-336.