APA (7th ed.) Citation

Geological Survey (U.S.), Kentucky Geological Survey, & Rice, C. L. (1972). Geologic map of the Alcorn quadrangle, East-Central Kentucky. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Kentucky Geological Survey, and Charles L. Rice. Geologic Map of the Alcorn Quadrangle, East-Central Kentucky. Washington, D.C.: The Survey, 1972.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Alcorn Quadrangle, East-Central Kentucky. The Survey, 1972.