Cita APA (7a ed.)

Neumark, D., & Powers, E. T. (1998). Welfare for the elderly: The effects of SSI on pre-retirement labor supply. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Neumark, David, y Elizabeth T. Powers. Welfare for the Elderly: The Effects of SSI on Pre-retirement Labor Supply. Cambridge, MA: National Bureau of Economic Research, 1998.

Cita MLA (9a ed.)

Neumark, David, y Elizabeth T. Powers. Welfare for the Elderly: The Effects of SSI on Pre-retirement Labor Supply. National Bureau of Economic Research, 1998.