Kay, R. T. (1997). Characterization of fill deposits in the Calumet region of northwestern Indiana and northeastern Illinois. U.S. Geological Survey.
Chicago Style (17th ed.) CitationKay, Robert T. Characterization of Fill Deposits in the Calumet Region of Northwestern Indiana and Northeastern Illinois. De Kalb, Illinois ; Indianapolis, Indiana: U.S. Geological Survey, 1997.
MLA (9th ed.) CitationKay, Robert T. Characterization of Fill Deposits in the Calumet Region of Northwestern Indiana and Northeastern Illinois. U.S. Geological Survey, 1997.
Warning: These citations may not always be 100% accurate.