@book{189008,
	author = {Blank, Leland T. and Tarquin, Anthony.},
	title = {Engineering economy / },
	publisher = {McGraw-Hill,},
	year = {c2005.},
	address = {Boston :},
	edition = {6th ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0420/2004016408.html}
}