@book{1000,
	author = {Ehrenfeld, David. and Ehrenfeld, David. and ebrary, Inc.},
	title = {Becoming good ancestors},
	publisher = {Oxford University Press,},
	year = {2009.},
	address = {Oxford ;},
	note = {Rev. ed. of: Swimming lessons / David Ehrenfeld. 2002.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10288334}
}