@book{7171,
	author = {Stevenson, William J. and Hojati, Mehran.},
	title = {Operations management. /},
	publisher = {McGraw-Hill/ Ryerson ,},
	year = {2011.},
	address = {Whitby :},
	edition = {4th Canadian edition.},
	note = {Includes index and appendix.}
}