Cita APA (7th ed.)

Kotlikoff, L. J., Smetters, K. A., & Walliser, J. (1998). Opting out of soical security and adverse selection. National Bureau of Economic Research.

Cita Chicago (17th ed.)

Kotlikoff, Laurence J., Kent A. Smetters, i Jan Walliser. Opting Out of Soical Security and Adverse Selection. Cambridge: National Bureau of Economic Research, 1998.

Cita MLA (9th ed.)

Kotlikoff, Laurence J., et al. Opting Out of Soical Security and Adverse Selection. National Bureau of Economic Research, 1998.