Bernstein, I. (1960). The lean years; a history of the American worker, 1920-1933. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Bernstein, Irving. The Lean Years; a History of the American Worker, 1920-1933. Boston: Houghton Mifflin, 1960.
Lua MLA (9ú heag.)Bernstein, Irving. The Lean Years; a History of the American Worker, 1920-1933. Houghton Mifflin, 1960.
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