Printes, R.C., Liesenfeld, M.V.A. and Jerusalinsky, L. (2001) “Alouatta guariba clamitans Cabrera, 1940: a new southern limit for the species and for Neotropical primates”, Neotropical Primates, 9(3), pp. 118–121. doi:10.62015/np.2001.v9.493.