What effect do unions have on wages now and would "what do unions do?" be surprised?
Blanchflower, D.G. and Bryson, A. 2007. What effect do unions have on wages now and would "what do unions do?" be surprised? in: Bennett, J.T. and Kaufman, B.E. (ed.) What do unions do? A twenty-year perspective New Brunswick, N.J. Transaction Publishers. pp. 79-113