@book{74058,
	author = {Porter, Andrew C. and ebrary, Inc.},
	title = {Methodological advances in cross-national surveys of educational achievement},
	publisher = {National Academy Press,},
	year = {c2002.},
	address = {Washington, DC :},
	note = {"Board on Testing and Assessment, Center for Education, Division of Behavioral and Social Sciences and Education, National Research Council."},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10032408}
}