Marshall, R. B. Proceedings of the second Pan American scientific congress: Engineering work of the United States Geological Survey.
Chicago Style (17th ed.) CitationMarshall, R. B. Proceedings of the Second Pan American Scientific Congress: Engineering Work of the United States Geological Survey.
MLA (9th ed.) CitationMarshall, R. B. Proceedings of the Second Pan American Scientific Congress: Engineering Work of the United States Geological Survey.