Lester, R. A. (1964). Economics of labor (Second edition.). Macmillan.
Cita Chicago (17th ed.)Lester, Richard Allen. Economics of Labor. Second edition. New York: Macmillan, 1964.
Cita MLA (9th ed.)Lester, Richard Allen. Economics of Labor. Second edition. Macmillan, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.