@book{125188,
	author = {Borjas, George J. and ebrary, Inc.},
	title = {Immigration and the work force},
	publisher = {University of Chicago Press,},
	year = {1992.},
	series = {A National Bureau of Economic Research project report},
	address = {Chicago :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10453061}
}