APA (7th ed.) Citation

Froelich, A. J., & Leavy, B. D. (1981). Map showing mineral resources of the Culpeper Basin, Virginia and Maryland: Availability and planning for future needs. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Froelich, A. J., and B. D. Leavy. Map Showing Mineral Resources of the Culpeper Basin, Virginia and Maryland: Availability and Planning for Future Needs. Reston, Va.: U.S. Geological Survey, 1981.

MLA (9th ed.) Citation

Froelich, A. J., and B. D. Leavy. Map Showing Mineral Resources of the Culpeper Basin, Virginia and Maryland: Availability and Planning for Future Needs. U.S. Geological Survey, 1981.