Oltman, R. E. (1964). Amazon River investigations, reconnaissance measurements of July, 1963. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationOltman, Roy E. Amazon River Investigations, Reconnaissance Measurements of July, 1963. Washington: United States Department of the Interior, Geological Survey, 1964.
MLA (8th ed.) CitationOltman, Roy E. Amazon River Investigations, Reconnaissance Measurements of July, 1963. United States Department of the Interior, Geological Survey, 1964.
Warning: These citations may not always be 100% accurate.