Frickel, D. G. (1972). Hydrology and effects of conservation structures, Willow Creek basin, Valley County, Montana: 1954-68. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationFrickel, Donald G. Hydrology and Effects of Conservation Structures, Willow Creek Basin, Valley County, Montana: 1954-68. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1972.
MLA (9th ed.) CitationFrickel, Donald G. Hydrology and Effects of Conservation Structures, Willow Creek Basin, Valley County, Montana: 1954-68. United States Department of the Interior, Geological Survey, 1972.
Warning: These citations may not always be 100% accurate.