@book{13596,
	author = {Hoffmann, Laurence D., and Bradley, Gerald L.,},
	title = {Calculus for business, economics, and the social and life sciences.},
	publisher = {McGraw-Hill,},
	year = {c2007.},
	address = {Boston :},
	edition = {9th ed. /},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/ecip0518/2005025832.html}
}