@book{68214,
	author = {Silverman, Lori L., and Propst, Annabeth L.,},
	title = {Critical shift :},
	publisher = {ASQ Quality Press,},
	year = {c1999.},
	address = {Milwaukee, Wis. :},
	url = {http://lcweb.loc.gov/catdir/toc/98043101.html}
}