APA (7th ed.) Citation

United States. Army Topographic Command & Geological Survey (U.S.). (1969). Eastern United States 1: 250,000 (1956, revised 1969.). U.S. Geological Survey.

Chicago Style (17th ed.) Citation

United States. Army Topographic Command and Geological Survey (U.S.). Eastern United States 1: 250,000. 1956, revised 1969. Washington, D.C.: U.S. Geological Survey, 1969.

MLA (9th ed.) Citation

United States. Army Topographic Command and Geological Survey (U.S.). Eastern United States 1: 250,000. 1956, revised 1969. U.S. Geological Survey, 1969.