@book{7329,
	author = {Zikmund, William G. et al.},
	title = {Business research methods: doing data analysis. /},
	publisher = {Cengage ,},
	year = {2011.},
	address = {London :},
	edition = {8th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0665/2005050520-d.html}
}