Howard, A. D. (1960). Cenozoic history of northeastern Montana and northwestern North Dakota: With emphasis on the Pleistocene. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationHoward, Arthur David. Cenozoic History of Northeastern Montana and Northwestern North Dakota: With Emphasis on the Pleistocene. Washington: United States Department of the Interior, Geological Survey, 1960.
MLA (9th ed.) CitationHoward, Arthur David. Cenozoic History of Northeastern Montana and Northwestern North Dakota: With Emphasis on the Pleistocene. United States Department of the Interior, Geological Survey, 1960.
Warning: These citations may not always be 100% accurate.