Roncancio Duque, N. and Benavides Montaño, J.A. 2013. Intestinal parasites in small and isolated population of Red-howler monkey (Alouatta seniculus) and Brown-spider monkey (Ateles hybridus), Atelidae - Primates in the Colombian Magdalena Medio. Revista Veterinaria y Zootecnia (On Line). 7, 1 (Jun. 2013), 71–89.