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.
Chicago Style (17th ed.) CitationSurvey, 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.
MLA引文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.
警告：這些引文格式不一定是100％准確.