@book{47194,
	author = {Ernest, Paul. and ebrary, Inc.},
	title = {The philosophy of mathematics education},
	publisher = {Falmer Press,},
	year = {1991.},
	address = {London ;},
	note = {"Studies in mathematics education."},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10062840}
}