Bird, L., Kreycik, C., & Friedman, B. (2009). Green power marketing in the United States: A status report (2008 Data). National Renewable Energy Laboratory.
Chicago Style (17th ed.) CitationBird, Lori, Claire Kreycik, and Barry Friedman. Green Power Marketing in the United States: A Status Report (2008 Data). Golden, CO: National Renewable Energy Laboratory, 2009.
MLA (9th ed.) CitationBird, Lori, et al. Green Power Marketing in the United States: A Status Report (2008 Data). National Renewable Energy Laboratory, 2009.
Warning: These citations may not always be 100% accurate.