(1973). Map showing bedrock topography and subcrop of selected beds beneath alluvial deposits of the Spottsville quadrangle, Henderson County, Kentucky. U.S. Geological Survey.
Chicago-Zitierstil (17. Ausg.)Map Showing Bedrock Topography and Subcrop of Selected Beds Beneath Alluvial Deposits of the Spottsville Quadrangle, Henderson County, Kentucky. Washington, D.C: U.S. Geological Survey, 1973.
MLA-Zitierstil (9. Ausg.)Map Showing Bedrock Topography and Subcrop of Selected Beds Beneath Alluvial Deposits of the Spottsville Quadrangle, Henderson County, Kentucky. U.S. Geological Survey, 1973.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.