Geologic map of the Vest quadrangle, eastern Kentucky
MLA
Danilchik, Walter, and Henry A Waldrop. Geologic Map of the Vest Quadrangle, Eastern Kentucky. Geologic Quadrangle Map. Reston, Va.: U.S. Geological Survey, 1978
APA, 7th edition
Danilchik, W., & Waldrop, H. A. (1978). Geologic map of the Vest quadrangle, eastern Kentucky. Geologic quadrangle map. Reston, Va.: U.S. Geological Survey
Chicago, 17th edition
Danilchik, Walter., and Henry A Waldrop. Geologic map of the Vest quadrangle, eastern Kentucky. Geologic quadrangle map. Reston, Va.: U.S. Geological Survey, 1978