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Lua i Stíl Chicago (17ú heag.)Turner, John A. Pension Policy: The Search for Better Solutions. Kalamazoo: W.E. Upjohn Institute for Employment Research, 2009.
Lua MLA (9ú heag.)Turner, John A. Pension Policy: The Search for Better Solutions. W.E. Upjohn Institute for Employment Research, 2009.
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