@book{12509,
	author = {Larson, Ron, and Hostetler, Robert P.},
	title = {Precalculus :},
	publisher = {Brooks/Cole,},
	year = {c2011.},
	address = {Belmont, CA :},
	edition = {2nd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy1303/2009930255-b.html}
}