@book{107939,
	author = {Guerra-L�opez, Ingrid. and ebrary, Inc.},
	title = {Performance evaluation},
	publisher = {Jossey-Bass,},
	year = {c2008.},
	address = {San Francisco :},
	edition = {1st ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10587609}
}