APA (7th ed.) Citation

Geological Survey (U.S.). (1968). Mass. -R.I. -Conn., shaded relief. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Mass. -R.I. -Conn., Shaded Relief. Washington, D.C.: The Survey, 1968.

MLA (9th ed.) Citation

Geological Survey (U.S.). Mass. -R.I. -Conn., Shaded Relief. The Survey, 1968.