@book{9904,
	author = {Schaie, K. Warner and ebrary, Inc.},
	title = {Social structures and aging individuals},
	publisher = {Springer Pub.,},
	year = {c2008.},
	series = {Societal impact on aging},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10265360}
}