APA (7th ed.) Citation

Geological Survey (U.S.). (1975). State of Virginia: Base map, 1973. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). State of Virginia: Base Map, 1973. Reston, Va.: The Survey, 1975.

MLA (9th ed.) Citation

Geological Survey (U.S.). State of Virginia: Base Map, 1973. The Survey, 1975.

Warning: These citations may not always be 100% accurate.