Significant floods in the United States during the 20th century :
USGS measures a century of floods /
Charles A. Perry

APA Citation

Perry, C. A., Geological Survey (U.S.). (2000). Significant floods in the United States during the 20th century: USGS measures a century of floods. [Reston, Va.]: [U.S. Dept. of the Interior, U.S. Geological Survey].

MLA Citation

Perry, Charles A, and Geological Survey (U.S.). Significant Floods In the United States During the 20th Century: USGS Measures a Century of Floods. [Reston, Va.]: [U.S. Dept. of the Interior, U.S. Geological Survey], 2000.

Warning: These citations may not always be complete (especially for serials).