@book{33205,
	author = {Barrack, Robert L. and Hip Society (U.S.)},
	title = {Orthopaedic knowledge update.},
	publisher = {American Academy of Orthopaedic Surgeons,},
	year = {2006.},
	address = {Rosemont, IL :},
	edition = {3rd ed.},
	url = {http://www.loc.gov/catdir/toc/fy0701/2006280251.html}
}