@book{22991,
	author = {Howes, Carollee. and Unger, Olivia. and ebrary, Inc.},
	title = {The collaborative construction of pretend},
	publisher = {State University of New York Press,},
	year = {c1992.},
	series = {SUNY series, children's play in society},
	address = {Albany :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10022956}
}