@book{105,
	author = {Hoffmann, Laurence D., and Bradley, Gerald L.,},
	title = {Calculus for business, economics, and the social and life sciences.},
	publisher = {McGraw-Hill,},
	year = {c2000.},
	address = {Boston :},
	edition = {7th ed. /},
	url = {http://www.loc.gov/catdir/description/mh023/99026455.html}
}