@book{28801,
	author = {Gustafson, R. David and Frisk, Peter D.,},
	title = {College algebra /},
	publisher = {Thomson Brooks/Cole,},
	year = {c2007},
	address = {Belmont, CA :},
	edition = {9th ed.},
	note = {Includes index},
	url = {http://www.loc.gov/catdir/toc/fy0614/2005928321.html}
}