Cite
MLA (8th Edition)
Rock-Stratigraphic Nomenclature, Lithology, and Subcrop Area of the Galena-Platteville Bedrock Unit In Illinois and Wisconsin. U.S. Department of the Interior, U.S. Geological Survey, 1997.
APA (7th Edition)
Rock-stratigraphic nomenclature, lithology, and subcrop area of the Galena-Platteville bedrock unit in Illinois and Wisconsin. (1997). U.S. Department of the Interior, U.S. Geological Survey.
Chicago (17th Edition)
“Rock-Stratigraphic Nomenclature, Lithology, and Subcrop Area of the Galena-Platteville Bedrock Unit in Illinois and Wisconsin.” Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 1997.