Status and Trends in the U.S. Voluntary Green Power Market (2012 Data)
Status and Trends in the U.S. Voluntary Green Power Market (2012 Data), report, October 1, 2013; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc866781/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.