@book{5908,
	author = {Thompson, Ian and ebrary, Inc.},
	title = {Teaching and learning early number},
	publisher = {Open University Press,},
	year = {2008.},
	address = {Maidenhead, England ;},
	edition = {2nd ed.},
	note = {Previous ed.: 1997.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10274024}
}