APA
Feldstein M., Liebman J., . (2000). The distributional effects of an investment-based social security system. Cambridge, Mass: National Bureau of Economic Research.
Chicago
Feldstein Martin, Liebman Jeffrey, . 2000. The distributional effects of an investment-based social security system. Cambridge, Mass: National Bureau of Economic Research.
Harvard
Feldstein M., Liebman J., . (2000). The distributional effects of an investment-based social security system. Cambridge, Mass: National Bureau of Economic Research.
MLA
Feldstein Martin, Liebman Jeffrey, . The distributional effects of an investment-based social security system. Cambridge, Mass: National Bureau of Economic Research. 2000.