@book{8,
	author = {Stevenson, William J.},
	title = {Operations management /},
	publisher = {McGraw-Hill/Irwin,},
	year = {c2009.},
	series = {The McGraw-Hill/Irwin series operations and decision sciences},
	address = {Boston :},
	edition = {10th ed.},
	url = {http://www.loc.gov/catdir/toc/fy0903/2008037021.html}
}