APA (7th ed.) Citation

Nordhaus, W. D. (2001). New data and output concepts for understanding productivity trends. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Nordhaus, William D. New Data and Output Concepts for Understanding Productivity Trends. Cambridge, Mass: National Bureau of Economic Research, 2001.

MLA (9th ed.) Citation

Nordhaus, William D. New Data and Output Concepts for Understanding Productivity Trends. National Bureau of Economic Research, 2001.