@book{12891,
	author = {Barnett, Raymond A. and Ziegler, Michael R.},
	title = {College algebra with trigonometry:},
	publisher = {McGraw-Hill Higher Education,},
	year = {2005.},
	series = {Barnett, Ziegler, and Byleen's precalculus series},
	address = {Boston :},
	note = {Includes indexes.},
	url = {http://www.loc.gov/catdir/enhancements/fy0701/2003059357-t.html}
}