APA (7th ed.) Citation

Geological Survey (U.S.). (1976). State of Maine: [Base map]. [publisher not identified].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). State of Maine: [Base Map]. Reston, Va.: [publisher not identified], 1976.

MLA (9th ed.) Citation

Geological Survey (U.S.). State of Maine: [Base Map]. [publisher not identified], 1976.

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