Maberry, J. O. (1973). Map showing construction materials resources in the Parker quadrangle, Arapahoe and Douglas Counties, Colorado. U.S. Geological Survey.
Chicago Style (17th ed.) CitationMaberry, John O. Map Showing Construction Materials Resources in the Parker Quadrangle, Arapahoe and Douglas Counties, Colorado. Washington, D.C.: U.S. Geological Survey, 1973.
MLA (9th ed.) CitationMaberry, John O. Map Showing Construction Materials Resources in the Parker Quadrangle, Arapahoe and Douglas Counties, Colorado. U.S. Geological Survey, 1973.
Warning: These citations may not always be 100% accurate.