• [Wiki] http://en.wikipedia.org/wiki/Leontocebus_nigricollis.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Leontocebus_nigricollis.
• [ADW] http://animaldiversity.ummz.umich.edu/accounts/Saguinus_nigricollis/.
• [ChasCoop1969] Chase, J. E. and Cooper, R. W. (1969). Saguinus nigricollis—physical growth and dental eruption in a small population of captive-barn individuals. American Journal of Physical Anthropology, 30(1):111–116. doi:10.1002/ajpa.1330300111.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.