@book{523,
	author = {Cooper, Donald R. and Schindler, Pamela S.},
	title = {Business research methods /},
	publisher = {McGraw-Hill Irwin,},
	year = {c2006.},
	address = {Boston :},
	edition = {9th},
	url = {http://www.loc.gov/catdir/enhancements/fy0665/2005050520-d.html}
}