@book{30312,
	author = {Black, Ken},
	title = {Business statistics:},
	publisher = {Wiley,},
	year = {c2004.},
	address = {Hoboken, NJ :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/bios/wiley046/2003265512.html}
}