APA (7th ed.) Citation

Johnstone, N., Hascic, I., & Popp, D. (2008). Renewable energy policies and technological innovation: Evidence based on patent counts. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Johnstone, Nick, Ivan Hascic, and David Popp. Renewable Energy Policies and Technological Innovation: Evidence Based on Patent Counts. Cambridge, Mass: National Bureau of Economic Research, 2008.

MLA (9th ed.) Citation

Johnstone, Nick, et al. Renewable Energy Policies and Technological Innovation: Evidence Based on Patent Counts. National Bureau of Economic Research, 2008.