APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.