@book{12,
	author = {Stewart, James,},
	title = {Single variable calculus :},
	publisher = {Thomson Brooks/Cole,},
	year = {c2008.},
	address = {Australia ;},
	edition = {6th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy1104/2006939531-b.html}
}