@book{11787,
	author = {Kirkpatrick, Donald L. and Kirkpatrick, James D.,},
	title = {Implementing the four levels :},
	publisher = {Berrett-Koehler Publishers,},
	year = {c2007.},
	address = {San Francisco :},
	edition = {1st ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0721/2007025384.html}
}