@book{39699,
	author = {Minnesota Symposium on Child Psychology and Pick, Anne D. and ebrary, Inc.},
	title = {Minnesota symposia on child psychology.},
	publisher = {University of Minnesota Press,},
	year = {1976.},
	series = {Minnesota symposia on child psychology (Series)},
	address = {Minneapolis :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10231316}
}