Abel, A. B. (1999). The social security trust fund, the rickless interest rate, and capital accumulation. National Bureau of Economic Research.
Cita Chicago (17th ed.)Abel, Andrew B. The Social Security Trust Fund, the Rickless Interest Rate, and Capital Accumulation. Cambridge: National Bureau of Economic Research, 1999.
Cita MLA (9th ed.)Abel, Andrew B. The Social Security Trust Fund, the Rickless Interest Rate, and Capital Accumulation. National Bureau of Economic Research, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.