United States. Department of Energy. Office of Energy Efficiency and Renewable Energy. (2008). 20% wind energy by 2030: Increasing wind energy's contribution to U.S. electricity supply : executive summary. U.S. Dept. of Energy, Energy Efficiency and Renewable Energy.
Chicago Style (17th ed.) CitationUnited States. Department of Energy. Office of Energy Efficiency and Renewable Energy. 20% Wind Energy by 2030: Increasing Wind Energy's Contribution to U.S. Electricity Supply : Executive Summary. [Washington, D.C.]: U.S. Dept. of Energy, Energy Efficiency and Renewable Energy, 2008.
MLA (9th ed.) CitationUnited States. Department of Energy. Office of Energy Efficiency and Renewable Energy. 20% Wind Energy by 2030: Increasing Wind Energy's Contribution to U.S. Electricity Supply : Executive Summary. U.S. Dept. of Energy, Energy Efficiency and Renewable Energy, 2008.