APA (7th ed.) Citation

Geological Survey (U.S.). Topographic maps. U.S. Geological Survey, National Cartographic Information Center.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Topographic Maps. [Reston, Va.] : Washington : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1976: U.S. Geological Survey, National Cartographic Information Center.

MLA (9th ed.) Citation

Geological Survey (U.S.). Topographic Maps. U.S. Geological Survey, National Cartographic Information Center.