@book{169553,
	author = {Efklides, Anastasia. and ebrary, Inc.},
	title = {Trends and prospects in motivation research},
	publisher = {Kluwer Academic,},
	year = {c2002.},
	address = {Boston :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10053382}
}