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 (April, 2006) http://www.redlist.org
• 2. Nature Wildlife (April, 2006) http://www.nature-wildlife.com/hipptxt.htm
• 3. The Ultimate Ungulate Page (April, 2006) http://www.ultimateungulate.com/
• 4. Burnie, D. (2001) Animal: The Definitive Visual Guide to the World's Wildlife. Dorling Kindersley, London.
• 5. CITES (April, 2006) http://www.cites.org
• 6. Eltringham, S.K. (1993) The Common Hippopotamus (Hippopotamus amphibius). In: Oliver, W.L.R. Ed. Pigs, Peccaries, and Hippos: Status Survey and Conservation Action Plan. IUCN, Gland, Switzerland. Available at http://iucn.org/themes/ssc/sgs/pphsg/Contents.htm
• 7. The Big Zoo (April, 2006) http://www.thebigzoo.com/Animals/Hippopotamus.asp
• 8. Animal Diversity Web (April, 2006) http://animaldiversity.ummz.umich.edu
• 9. IUCN/SSC Hippo Specialist SubGroup (April, 2006) http://moray.ml.duke.edu/projects/hippos/
• Galasso, V; Pichierri, F. 2009. Probing the molecular and electronic structure of norhipposudoric and hipposudoric acids from the red sweat of hippopotamus amphibius: A DFT Investigation. Journal of Physical Chemistry A. 113(11): 2534-2543.
• I., Helmy., & D. Osborn.   (1980).  The Contemporary Land Mammals of Egypt (including Sinai) Field Museum of Natural History, no. 5, Cairo..  
• M., Basuony., F. Gilbert., & S. Zalat.   (2010).  Mammals of Egypt: Atlas, Red Data Listing & Conservation, Ministry of State for Environmental Affairs, Cairo..  
• Nowak, R.M. and J.L. Paradiso. 1983. Walker's Mammals of the World, Fourth Edition. John Hopkins University Press. Baltimore and London.
• R., Hoath.   (2003).  A Field Guide to the Mammals of Egypt, The American University in Cairo Press, Cairo..  
• Richard Weigl (2005) Longevity of Mammals in Captivity; from the Living Collections of the World. Kleine Senckenberg-Reihe 48: Stuttgart.
• Ronald Nowak (1999) Walker's Mammals of the World. Johns Hopkins University Press: Baltimore.
• Saikawa, Y.; Hashimoto, K.; Nakata, M.; Yoshihara, M.; Nagai, K.; Ida, M.; Komiya, T. The red sweat of the hippopotamus. Nature. 429(6990): 363.
• 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
• [Anonymous]   (2011).  ARKive.