APA (7th ed.) Citation

Geological Survey (U.S.). (1973). State of Maine. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). State of Maine. Washington, D.C.: The Survey, 1973.

MLA (9th ed.) Citation

Geological Survey (U.S.). State of Maine. The Survey, 1973.

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