APA (7th ed.) Citation

Illinois State Geological Survey. Illinois mineral production by counties. [publisher not identified].

Chicago Style (17th ed.) Citation

Illinois State Geological Survey. Illinois Mineral Production by Counties. Urbana: [publisher not identified].

MLA (9th ed.) Citation

Illinois State Geological Survey. Illinois Mineral Production by Counties. [publisher not identified].

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