APA (7th ed.) Citation

Klette, T. J., & Kortum, S. (2002). Innovating firms and aggregate innovation. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Klette, Tor Jakob, and Samuel Kortum. Innovating Firms and Aggregate Innovation. Cambridge, MA: National Bureau of Economic Research, 2002.

MLA (9th ed.) Citation

Klette, Tor Jakob, and Samuel Kortum. Innovating Firms and Aggregate Innovation. National Bureau of Economic Research, 2002.