Johnstone, N., Hascic, I., & Popp, D. (2008). Renewable energy policies and technological innovation: Evidence based on patent counts. National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Johnstone, Nick, Ivan Hascic, und David Popp. Renewable Energy Policies and Technological Innovation: Evidence Based on Patent Counts. Cambridge, Mass: National Bureau of Economic Research, 2008.
MLA-Zitierstil (9. Ausg.)Johnstone, Nick, et al. Renewable Energy Policies and Technological Innovation: Evidence Based on Patent Counts. National Bureau of Economic Research, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.