APA (7th ed.) Citation

Johnson, W. D., Jr. (1973). Geologic map of part of the Henderson quadrangle, Henderson County, Kentucky (Rev. 1973.). U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Johnson, William D., Jr. Geologic Map of Part of the Henderson Quadrangle, Henderson County, Kentucky. Rev. 1973. Washington, D.C.: U.S. Geological Survey, 1973.

MLA (9th ed.) Citation

Johnson, William D., Jr. Geologic Map of Part of the Henderson Quadrangle, Henderson County, Kentucky. Rev. 1973. U.S. Geological Survey, 1973.