APA (7th ed.) Citation

Illinois State Geological Survey. (1907). Year-book for 1906-1917/1918. University of Illinois.

Chicago Style (17th ed.) Citation

Illinois State Geological Survey. Year-book for 1906-1917/1918. Urbana: University of Illinois, 1907.

MLA (9th ed.) Citation

Illinois State Geological Survey. Year-book for 1906-1917/1918. University of Illinois, 1907.

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