Cita APA (7a ed.)

Feldstein, M. S., & Ranguelova, E. (2001). Individual risk in an investment-based Social Security system. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Feldstein, Martin S., y Elena Ranguelova. Individual Risk in an Investment-based Social Security System. Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Feldstein, Martin S., y Elena Ranguelova. Individual Risk in an Investment-based Social Security System. National Bureau of Economic Research, 2001.