APA (7th ed.) Citation

Barr, J. L., & Arndt, H. H. (1968). Geologic map of the Dorton quadrangle, Pike County, Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Barr, J. L., and Harold H. Arndt. Geologic Map of the Dorton Quadrangle, Pike County, Kentucky. Washington, D.C.: U.S. Geological Survey, 1968.

MLA (9th ed.) Citation

Barr, J. L., and Harold H. Arndt. Geologic Map of the Dorton Quadrangle, Pike County, Kentucky. U.S. Geological Survey, 1968.