"June 2013."
"Prepared for: U.S. Energy Information Administration at the U.S. Department of Energy, Washington, DC; prepared by Vello A. Kuuskraa, President; Scott H. Stevens, Sr. Vice President; Keith D. Moodhe, Sr. Consultant, Advanced Resources International, Inc.; May 17, 2013"--Page [22].
Description based on online resource; title from PDF cover (viewed June 13, 2013).