Wolff, E. N. (2011). The transformation of the American pension system: Was it beneficial for workers? W.E. Upjohn Institute for Employment Research.
Citace podle Chicago (17th ed.)Wolff, Edward N. The Transformation of the American Pension System: Was It Beneficial for Workers? Kalamazoo, Mich.: W.E. Upjohn Institute for Employment Research, 2011.
Citace podle MLA (9th ed.)Wolff, Edward N. The Transformation of the American Pension System: Was It Beneficial for Workers? W.E. Upjohn Institute for Employment Research, 2011.
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