Geological Survey (U.S.) & Loelkes, G. L. (1983). Land use/land cover and environmental photointerpretation keys. U.S. Dept. of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and George L. Loelkes. Land Use/land Cover and Environmental Photointerpretation Keys. [Reston, Va.]: U.S. Dept. of the Interior, Geological Survey, 1983.
MLA (9th ed.) CitationGeological Survey (U.S.) and George L. Loelkes. Land Use/land Cover and Environmental Photointerpretation Keys. U.S. Dept. of the Interior, Geological Survey, 1983.
Warning: These citations may not always be 100% accurate.