Illinois State Geological Survey. (1916). Year book for 1915: Administrative report and economic and geological papers : work in cooperation with U. S. Geological Survey. Illinois State Geological Survey, University of Illinois.
Chicago Style (17th ed.) CitationIllinois State Geological Survey. Year Book for 1915: Administrative Report and Economic and Geological Papers : Work in Cooperation with U. S. Geological Survey. Urbana: Illinois State Geological Survey, University of Illinois, 1916.
MLA (9th ed.) CitationIllinois State Geological Survey. Year Book for 1915: Administrative Report and Economic and Geological Papers : Work in Cooperation with U. S. Geological Survey. Illinois State Geological Survey, University of Illinois, 1916.
Warning: These citations may not always be 100% accurate.