APA (7th ed.) Citation

Geological Survey (U.S.) & Illnois. (1987). Adams County, Illinois, 1986: 1:100 000-scale planimetric map. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Illnois. Adams County, Illinois, 1986: 1:100 000-scale Planimetric Map. Reston, Va. : Denver, Colo. : For sale by the Survey: The Survey, 1987.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Illnois. Adams County, Illinois, 1986: 1:100 000-scale Planimetric Map. The Survey, 1987.

Warning: These citations may not always be 100% accurate.