APA (7th ed.) Citation

Piketty, T., & Saez, E. (2001). Income inequality in the United States: 1913 - 1998. NBER.

Chicago Style (17th ed.) Citation

Piketty, Thomas, and Emmanuel Saez. Income Inequality in the United States: 1913 - 1998. Cambridge, Mass: NBER, 2001.

MLA (9th ed.) Citation

Piketty, Thomas, and Emmanuel Saez. Income Inequality in the United States: 1913 - 1998. NBER, 2001.

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