APA (7th ed.) Citation

Geological Survey (U.S.), Kentucky Geological Survey, & Lewis, R. Q. (1972). Geologic map of the Vernon quadrangle and part of the Celina quadrangle, Monroe and Cumberland Counties, Kentucky. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Kentucky Geological Survey, and Richard Quintin Lewis. Geologic Map of the Vernon Quadrangle and Part of the Celina Quadrangle, Monroe and Cumberland Counties, Kentucky. Washington, D.C.: The Survey, 1972.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Vernon Quadrangle and Part of the Celina Quadrangle, Monroe and Cumberland Counties, Kentucky. The Survey, 1972.