Cita APA (7a ed.)

Campbell, J. Y. (1999). Investing retirement wealth: A life-cycle model. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Campbell, John Y. Investing Retirement Wealth: A Life-cycle Model. Cambridge, MA: National Bureau of Economic Research, 1999.

Cita MLA (9a ed.)

Campbell, John Y. Investing Retirement Wealth: A Life-cycle Model. National Bureau of Economic Research, 1999.