George, R., & Gray-Hann, P. (2001). NREL North American solar radiation atlas. National Renewable Energy Laboratory.
Chicago Style (17th ed.) CitationGeorge, Ray, and Pamela Gray-Hann. NREL North American Solar Radiation Atlas. [Golden, Colo.]: National Renewable Energy Laboratory, 2001.
MLA (9th ed.) CitationGeorge, Ray, and Pamela Gray-Hann. NREL North American Solar Radiation Atlas. National Renewable Energy Laboratory, 2001.
Warning: These citations may not always be 100% accurate.