Survey, U. S. G. (1981). Stratigraphy and sedimentary facies of the Madison limestone and associated rocks in parts of Montana, North Dakota, South Dakota, Wyoming and Nebraska. Denver, Colo. : US Geological Survey.
Cytowanie według stylu Chicago (wyd. 17)Survey, United States. Geological. Stratigraphy and Sedimentary Facies of the Madison Limestone and Associated Rocks in Parts of Montana, North Dakota, South Dakota, Wyoming and Nebraska. Denver, Colo. : US Geological Survey, 1981.
Cytowanie według stylu MLA (wyd. 9)Survey, United States. Geological. Stratigraphy and Sedimentary Facies of the Madison Limestone and Associated Rocks in Parts of Montana, North Dakota, South Dakota, Wyoming and Nebraska. Denver, Colo. : US Geological Survey, 1981.
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