Outerbridge, W. F., Weiss, M. P., & Osborne, R. H. (1973). Geologic map of the Higginsport quadrangle, Ohio-Kentucky and part of the Russelville quadrangle, Mason County, Kentucky. Geological Survey.
Chicago Style (17th ed.) CitationOuterbridge, William F., Malcolm P. Weiss, and Robert H. Osborne. Geologic Map of the Higginsport Quadrangle, Ohio-Kentucky and Part of the Russelville Quadrangle, Mason County, Kentucky. [Reston, Va.]: Geological Survey, 1973.
MLA (9th ed.) CitationOuterbridge, William F., et al. Geologic Map of the Higginsport Quadrangle, Ohio-Kentucky and Part of the Russelville Quadrangle, Mason County, Kentucky. Geological Survey, 1973.
Warning: These citations may not always be 100% accurate.