APA (7th ed.) Citation

Geological Survey (U.S.), Geological Survey of Alabama, Copeland, C. W., Richmond, G. M., Fullerton, D. S., & Weide, D. L. (1988). Quaternary geologic map of the Mobile 4⁰ x 6⁰ quadrangle, United States. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Geological Survey of Alabama, Charles W. Copeland, Gerald Martin Richmond, David S. Fullerton, and David L. Weide. Quaternary Geologic Map of the Mobile 4⁰ X 6⁰ Quadrangle, United States. Reston, Va.: U.S. Geological Survey, 1988.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Quaternary Geologic Map of the Mobile 4⁰ X 6⁰ Quadrangle, United States. U.S. Geological Survey, 1988.