@book{136814,
	author = {Powers, Bethel Ann, and Knapp, Thomas R., and ebrary, Inc.},
	title = {Dictionary of nursing theory and research},
	publisher = {Springer Pub. Co.,},
	year = {2011.},
	address = {New York :},
	edition = {4th ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10546343}
}