@book{42500,
	author = {Earle, Roger W., and National Strength & Conditioning Association (U.S.)},
	title = {NSCA's essentials of personal training /},
	publisher = {Human Kinetics,},
	year = {c2004.},
	address = {Champaign, IL :},
	url = {http://www.loc.gov/catdir/toc/ecip048/2003019033.html}
}