@book{19345,
	author = {Ornstein, Allan C.},
	title = {Class counts :},
	publisher = {Rowman & Littlefield Pub. Group, Inc.,},
	year = {c2007.},
	address = {Lanham, MD :},
	url = {http://www.loc.gov/catdir/toc/ecip071/2006030859.html}
}