Lebergott, S. (1964). Men without work: The economics of unemployment. Prentice-Hall.
Dyfyniad Arddull ChicagoLebergott, Stanley. Men Without Work: The Economics of Unemployment. Englewood Cliffs, N.J: Prentice-Hall, 1964.
Dyfyniad MLALebergott, Stanley. Men Without Work: The Economics of Unemployment. Prentice-Hall, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.