@book{30705,
	author = {Bowerman, Bruce L. and O'Connell, Richard T.},
	title = {Business statistics in practice.},
	publisher = {McGraw-Hill/Irwin,},
	year = {c2007.},
	address = {Boston :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0625/2005053422-t.html}
}