APA (7th ed.) Citation

National Renewable Energy Laboratory (U.S.) & Logan, J. (2009). Evaluating a proposed 20% national renewable portfolio standard. National Renewable Energy Laboratory.

Chicago Style (17th ed.) Citation

National Renewable Energy Laboratory (U.S.) and Jeffrey Logan. Evaluating a Proposed 20% National Renewable Portfolio Standard. Golden, Colo.: National Renewable Energy Laboratory, 2009.

MLA (9th ed.) Citation

National Renewable Energy Laboratory (U.S.) and Jeffrey Logan. Evaluating a Proposed 20% National Renewable Portfolio Standard. National Renewable Energy Laboratory, 2009.