@book{6730,
	author = {Greenwood, P. E., and Nikulin, M. S.},
	title = {A guide to chi-squared testing /},
	publisher = {Wiley,},
	year = {c1996.},
	address = {New York :},
	note = {"A Wiley-Interscience publication."},
	url = {http://www.loc.gov/catdir/bios/wiley041/95052754.html}
}