@book{448,
	author = {Cramer, Duncan, and Howitt, Dennis.},
	title = {The Sage dictionary of statistics :},
	publisher = {SAGE,},
	year = {2004.},
	address = {London ;},
	url = {http://www.loc.gov/catdir/enhancements/fy0657/2004303462-d.html}
}