Howard, A. D. (1960). Cenozoic history of Northeastern Montana and Northwestern North Dakota with emphasis on the Pleistocene. [publisher not identified].
Chicago Style (17th ed.) CitationHoward, Arthur David. Cenozoic History of Northeastern Montana and Northwestern North Dakota with Emphasis on the Pleistocene. [Place of publication not identified]: [publisher not identified], 1960.
MLA (9th ed.) CitationHoward, Arthur David. Cenozoic History of Northeastern Montana and Northwestern North Dakota with Emphasis on the Pleistocene. [publisher not identified], 1960.
Warning: These citations may not always be 100% accurate.