Kowalewski, M. and Zunino, G.E. 2005. The parasite behavior hypothesis and the use of sleeping sites by black howler monkeys (Alouatta caraya) in a discontinuous forest. Neotropical Primates. 13, 1 (Apr. 2005), 22–26. DOI:https://doi.org/10.1896/1413-4705.13.1.22.