@book{11258,
	author = {Michell, Joel. and ebrary, Inc.},
	title = {Measurement in psychology},
	publisher = {Cambridge University Press,},
	year = {c1999.},
	series = {Ideas in context},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10014966}
}