The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• 1. IUCN Red List (January, 2009) http://www.iucnredlist.org
• 10. The Bushmeat Crisis Task Force (January, 2009) http://www.bushmeat.org
• 2. Alden, P.C., Estes, R.D., Schlitter, D. and McBride, B. (1996) Collins Guide to African Wildlife. HarperCollins Publishers, London.
• 3. Macdonald, D. (2001) The New Encyclopedia of Mammals. Oxford University Press, Oxford.
• 4. CITES (January, 2009) http://www.cites.org
• 5. Arnold, K. and Zuberbühler, K. (2006) The alarm-calling system of adult male putty-nosed monkeys, Cercopithecus nictitans martini. Animal Behaviour, 72: 643 - 653.
• 6. Boinski, S. and Garber, P.A. (2000) On the Move: How and why Animals Travel in Groups. University of Chicago Press, Chicago.
• 7. Nowak, R.M. (1999) Walker's Mammals of the World. Sixth edition. Johns Hopkins University Press, Baltimore and London.
• 8. African Convention on the Conservation of Nature and Natural Resources (January, 2009) http://sedac.ciesin.org/entri/texts/african.conv.conserva.1969.html
• 9. Bioko Biodiversity Protection Program (January, 2009) http://www.bioko.org/wildlife/nictitans.asp
• Richard Weigl (2005) Longevity of Mammals in Captivity; from the Living Collections of the World. Kleine Senckenberg-Reihe 48: Stuttgart.
• Wilson, Don E., and DeeAnn M. Reeder, eds. 1993. Mammal Species of the World: A Taxonomic and Geographic Reference, 2nd ed., 3rd printing. xviii + 1207
• Wilson, Don E., and F. Russell Cole. 2000. Common Names of Mammals of the World. xiv + 204