Cita APA (7a ed.)

Ashenfelter, O., & Card, D. E. (2001). Did the elimination of mandatory retirement affect faculty retirement flows? National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Ashenfelter, Orley, y David E. Card. Did the Elimination of Mandatory Retirement Affect Faculty Retirement Flows? Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Ashenfelter, Orley, y David E. Card. Did the Elimination of Mandatory Retirement Affect Faculty Retirement Flows? National Bureau of Economic Research, 2001.