Cita APA (7a ed.)

Piketty, T., & Saez, E. (2001). Income inequality in the United States, 1913-1998. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Piketty, Thomas, y Emmanuel Saez. Income Inequality in the United States, 1913-1998. Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Piketty, Thomas, y Emmanuel Saez. Income Inequality in the United States, 1913-1998. National Bureau of Economic Research, 2001.