Cita APA (7th ed.)

Cutler, D. M., & Meara, E. (2001). Changes in the age distribution of mortality over the 20th century. National Bureau of Economic Research.

Cita Chicago (17th ed.)

Cutler, David M., i Ellen Meara. Changes in the Age Distribution of Mortality over the 20th Century. Cambridge: National Bureau of Economic Research, 2001.

Cita MLA (9th ed.)

Cutler, David M., i Ellen Meara. Changes in the Age Distribution of Mortality over the 20th Century. National Bureau of Economic Research, 2001.