Geological Survey & Luedke, R. G. (1993). Map showing distribution, composition, and age of early and middle Cenozoic volcanic centers in Colorado and Utah. The Survey ; For sale by Map Distribution.
Chicago Style (17th ed.) CitationGeological Survey and Robert G. Luedke. Map Showing Distribution, Composition, and Age of Early and Middle Cenozoic Volcanic Centers in Colorado and Utah. Reston, VA : Denver, CO: The Survey ; For sale by Map Distribution, 1993.
MLA (8th ed.) CitationGeological Survey and Robert G. Luedke. Map Showing Distribution, Composition, and Age of Early and Middle Cenozoic Volcanic Centers in Colorado and Utah. The Survey ; For sale by Map Distribution, 1993.
Warning: These citations may not always be 100% accurate.