APA (7th ed.) Citation

Geological Survey (U.S.). (1998). Open-file reports. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Open-file Reports. [Reston, Va.]: U.S. Geological Survey, 1998.

MLA (9th ed.) Citation

Geological Survey (U.S.). Open-file Reports. U.S. Geological Survey, 1998.

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