Cita APA (7th ed.)

Garber, A. M., McCurdy, T. E., & MaClellan, M. C. (1997). Persistence of medicare expenditures among elderly beneficiaries. National Bureau of Economic Research.

Cita Chicago (17th ed.)

Garber, Alan M., Thomas E. McCurdy, i Mark C. MaClellan. Persistence of Medicare Expenditures Among Elderly Beneficiaries. Cambridge: National Bureau of Economic Research, 1997.

Cita MLA (9th ed.)

Garber, Alan M., et al. Persistence of Medicare Expenditures Among Elderly Beneficiaries. National Bureau of Economic Research, 1997.