APA (7th ed.) Citation

Geological Survey (U.S.) & Appalachian Regional Commission. (1967). Appalachian region: As designated by the Appalachian Regional Commission. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Appalachian Regional Commission. Appalachian Region: As Designated by the Appalachian Regional Commission. Washington, D.C.: U.S. Geological Survey, 1967.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Appalachian Regional Commission. Appalachian Region: As Designated by the Appalachian Regional Commission. U.S. Geological Survey, 1967.