APA (7th ed.) Citation

Geological Survey (U.S.). (1987). [State map series, topographic]: Base map with highways and contours (Ed. of 1987.). The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). [State Map Series, Topographic]: Base Map with Highways and Contours. Ed. of 1987. Reston, Va.: The Survey, 1987.

MLA (9th ed.) Citation

Geological Survey (U.S.). [State Map Series, Topographic]: Base Map with Highways and Contours. Ed. of 1987. The Survey, 1987.