Bernstein, I. (1960). The lean years; a history of the American worker, 1920-1933. Houghton Mifflin.
Cita Chicago (17th ed.)Bernstein, Irving. The Lean Years; a History of the American Worker, 1920-1933. Boston: Houghton Mifflin, 1960.
Cita MLA (9th ed.)Bernstein, Irving. The Lean Years; a History of the American Worker, 1920-1933. Houghton Mifflin, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.