Bos grunniensThe Yak

References

Bos grunniens: grunting ox. 2007. <URL:http://eol.org/pages/328700/overview. Accessed 28 March 2012.

Guo, Songchang, Peter Savolainen, Jianping Su, Qian Zhang, Delin Qi, Jie Zhou, Yang Zhong, Xinquan Zhao, and Jianquan Liu. 2006. Origin of Mitochondrial DNA Diversity of Domestic Yaks. BMC Evolutionary Biology 6.   

Huffman, Brent. Ultimate Ungulates. 2012. <URL: http://www.ultimateungulate.com/index.html. Accessed 28 March 2012.

Kleiman,  Devra G., Valerius Geist, Melissa C. McDade, Joseph Trumpey, and Michael Hutchins. 2004. Grzimek’s Animal Life Encyclopedia 2nd Edition Mammals V. Thompson Gale, Detroit, Michigan, USA.

Leslie, David M. Jr and George B. Schaller. 2009. Mammalian Species: Bos grunniens and Bos mutus (Artiodactyla:       Bovidae). American Society of Mammalologists.

Oliphant, M. "Bos grunniens," Animal Diversity Web. 2003. <URL: http://animaldiversity.ummz.umich.edu/site/accounts/information/Bos_grunniens.html. Accessed 5 April 2012.

Parker, Sybil P. 1990. Grzimek’s Encyclopedia of Mammals Volume V. McGraw-Hill Publishing Company, New York, New York, USA.

Wilson, Don E. and DeeAnn M. Reeder. 2005.  Mammal Species of the World: A Taxonomic and Geographic Reference 3rd Edition. The John Hopkins University Press, Baltimore, Maryland, USA.

Yak. 2012. <URL: http://a-z-animals.com/animals/yak/. Accessed 1 April 2012.