Geological Survey (U.S.) & ProQuest (Firm). (1907). Rate of recession of Niagara Falls. [publisher not identified].
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and ProQuest (Firm). Rate of Recession of Niagara Falls. Washington: [publisher not identified], 1907.
MLA (9th ed.) CitationGeological Survey (U.S.) and ProQuest (Firm). Rate of Recession of Niagara Falls. [publisher not identified], 1907.
Warning: These citations may not always be 100% accurate.