Geological Survey. (1979). Aeromagnetic map of the Westcliffe-Royal Gorge area, Custer and Fremont Counties, Colorado. The Survey.
Chicago Style (17th ed.) CitationGeological Survey. Aeromagnetic Map of the Westcliffe-Royal Gorge Area, Custer and Fremont Counties, Colorado. Reston, Va.: The Survey, 1979.
MLA (8th ed.) CitationGeological Survey. Aeromagnetic Map of the Westcliffe-Royal Gorge Area, Custer and Fremont Counties, Colorado. The Survey, 1979.
Warning: These citations may not always be 100% accurate.