Leal, S.A.Z. and Defler, T.R. (2013) “Sympatric distribution of two species of Alouatta (A. seniculus and A. palliata: Primates) in Chocó, Colombian Amazonas, Peru”, Neotropical Primates, 20(1), pp. 1–11. doi:10.1896/044.020.0102.