Cite
MLA (8th Edition)
Krug, William R.. Map of Mean Annual Runoff for the Northeastern, Southeastern, and Mid-Atlantic United States, Water Years 1951-80. U.S. Geological Survey, U.S. Geological Survey, Books and Open-File Reports Section, 1990.
APA (7th Edition)
Krug, W. R. (1990). Map of mean annual runoff for the northeastern, southeastern, and mid-Atlantic United States, water years 1951-80. U.S. Geological Survey, U.S. Geological Survey, Books and Open-File Reports Section.
Chicago (17th Edition)
Krug, William R. Map of Mean Annual Runoff for the Northeastern, Southeastern, and Mid-Atlantic United States, Water Years 1951-80. Madison, Wis: U.S. Geological Survey, U.S. Geological Survey, Books and Open-File Reports Section, 1990.