APA (7th ed.) Citation

Hansen, D. E., & Smith, A. E. (1978). Geologic map of the Livermore quadrangle, western Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Hansen, Dan E., and Avery E. Smith. Geologic Map of the Livermore Quadrangle, Western Kentucky. Reston, Va.: U.S. Geological Survey, 1978.

MLA (9th ed.) Citation

Hansen, Dan E., and Avery E. Smith. Geologic Map of the Livermore Quadrangle, Western Kentucky. U.S. Geological Survey, 1978.