@inbook{1100795194, author={Nancy Hamilton, Ph.D. and Wendi Weimar, Ph.D. and Kathryn Luttgens, Ph.D.}, title={Locomotion: When Suspended and Free of Support}, booktitle={Kinesiology: Scientific Basis of Human Motion, 12e}, publisher={McGraw-Hill, a business unit of The McGraw-Hill Co}, address={New York, NY}, year={2011}, url={accessphysiotherapy.mhmedical.com/content.aspx?aid=1100795194} }