@book{7059,
	author = {Lincoln, Yvonna S. and Guba, Egon G. and ebrary, Inc.},
	title = {The constructivist credo},
	publisher = {Left Coast Press, Inc.,},
	year = {2013.},
	address = {Walnut Creek, Calif. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10700214}
}