Cita APA (7a ed.)

Razin, A., Sadka, E., & Swagel, P. (2001). The aging population and the size of the welfare state. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Razin, Assaf, Efraim Sadka, y Phillip Swagel. The Aging Population and the Size of the Welfare State. Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Razin, Assaf, et al. The Aging Population and the Size of the Welfare State. National Bureau of Economic Research, 2001.