Haas, F. J. (1937). The wages and hours of American labor. Paulist Press.
Lua i Stíl Chicago (17ú heag.)Haas, Francis J. The Wages and Hours of American Labor. New York: Paulist Press, 1937.
Lua MLA (8ú heag.)Haas, Francis J. The Wages and Hours of American Labor. Paulist Press, 1937.
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