Armstrong, F. C. (1957). Dismal swamp placer deposit, Elmore County, Idaho. [United States Department of the Interior, Geological Survey].
Chicago Style (17th ed.) CitationArmstrong, Frank C. Dismal Swamp Placer Deposit, Elmore County, Idaho. [Washington, D.C.]: [United States Department of the Interior, Geological Survey], 1957.
MLA (9th ed.) CitationArmstrong, Frank C. Dismal Swamp Placer Deposit, Elmore County, Idaho. [United States Department of the Interior, Geological Survey], 1957.
Warning: These citations may not always be 100% accurate.