@book{59469,
	author = {Cooper, Donald R. and Schindler, Pamela S.},
	title = {Business research methods /},
	publisher = {McGraw-Hill/Irwin,},
	year = {c2011.},
	series = {The McGraw-Hill/Irwin series in operations and decision sciences},
	address = {New York :},
	edition = {11th ed.}
}