APA (7th ed.) Citation

Illinois State Geological Survey & Illinois State Geological Survey. (1932). Illinois mineral industry. The Survey.

Chicago Style (17th ed.) Citation

Illinois State Geological Survey and Illinois State Geological Survey. Illinois Mineral Industry. Urbana, Ill.: The Survey, 1932.

MLA (9th ed.) Citation

Illinois State Geological Survey and Illinois State Geological Survey. Illinois Mineral Industry. The Survey, 1932.

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