COLIN BLAKEMORE and SHELIA JENNETT. "musculo-skeletal system." The Oxford Companion to the Body. Oxford University Press. 2001. Encyclopedia.com. 10 Dec. 2009 <http://www.encyclopedia.com>.
COLIN BLAKEMORE and SHELIA JENNETT. "musculo-skeletal system." The Oxford Companion to the Body. Oxford University Press. 2001. Encyclopedia.com. (December 10, 2009). http://www.encyclopedia.com/doc/1O128-musculoskeletalsystem.html
COLIN BLAKEMORE and SHELIA JENNETT. "musculo-skeletal system." The Oxford Companion to the Body. Oxford University Press. 2001. Retrieved December 10, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O128-musculoskeletalsystem.html