Chaves, Óscar M.; César Bicca-Marques, Júlio (2013). “Dietary Flexibility of the Brown Howler Monkey Throughout Its Geographic Distribution”. American Journal of Primatology75 (1): 16–29. doi:10.1002/ajp.22075. ISSN0275-2565. PMID22972605.
Chaves, Óscar M.; César Bicca-Marques, Júlio (2013). “Dietary Flexibility of the Brown Howler Monkey Throughout Its Geographic Distribution”. American Journal of Primatology75 (1): 16–29. doi:10.1002/ajp.22075. ISSN0275-2565. PMID22972605.
Chaves, Óscar M.; César Bicca-Marques, Júlio (2013). “Dietary Flexibility of the Brown Howler Monkey Throughout Its Geographic Distribution”. American Journal of Primatology75 (1): 16–29. doi:10.1002/ajp.22075. ISSN0275-2565. PMID22972605.