@book{30785,
	author = {Ferraro, Kenneth F. and ebrary, Inc.},
	title = {Gerontology},
	publisher = {Springer,},
	year = {c2013.},
	address = {New York, NY :},
	edition = {4th ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10687051}
}