- ↑ 1.0 1.1 1.2 1.3 Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
- David J. Chivers, Bernard A. Wood & Alan Bilsborough, ed. (1984). Food Acquisition and Processing in Primates. New York & London: Plenum Press. ISBN 0-306-41701-4.
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