APA (7th ed.) Citation

Geological Survey (U.S.), Maryland Geological Survey, Cleaves, E. T., Richmond, G. M., Fullerton, D. S., & Weide, D. L. (1987). Quaternary geologic map of the Chesapeake Bay 4?x 6 quadrangle, United States. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Maryland Geological Survey, Emery T. Cleaves, Gerald Martin Richmond, David S. Fullerton, and David L. Weide. Quaternary Geologic Map of the Chesapeake Bay 4?x 6 Quadrangle, United States. Reston, Va.: U.S. Geological Survey, 1987.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Quaternary Geologic Map of the Chesapeake Bay 4?x 6 Quadrangle, United States. U.S. Geological Survey, 1987.