Bernstein, I. (1966). The lean years: A history of the American worker 1920 - 1933. Baltimore, Maryland: Penguin Books.
Dyfyniad Arddull ChicagoBernstein, Irving. The Lean Years: A History of the American Worker 1920 - 1933. Baltimore, Maryland: Penguin Books, 1966.
Dyfyniad MLABernstein, Irving. The Lean Years: A History of the American Worker 1920 - 1933. Baltimore, Maryland: Penguin Books, 1966.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.