CAHUC Pierre, Stéphane CARCILLO and André ZYLBERBERG. Labour Economics. 2nd Edition. Cambridge, MA, MIT Press, 2014. ISBN 978-0-26-202770-0.
LAYARD Richard, Stephen NICKELL and Richard JACKMAN. Unemployment. 2nd Edition. Oxford University Press, 2009. ISBN 978-0-19-927917-3.
ZIMMERMANN Klaus F., Thomas BAUER. The Economis of Migration. Volume I – IV. Cheltenham: Edward Elgar, 2002. ISBN 1-85898-756-3.