United States. National Weather Service. (1999). Oklahoma/southern Kansas tornado outbreak of May 3, 1999. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Weather Service.
Chicago Style (17th ed.) CitationUnited States. National Weather Service. Oklahoma/southern Kansas Tornado Outbreak of May 3, 1999. Silver Spring, Md.: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Weather Service, 1999.
MLA (9th ed.) CitationUnited States. National Weather Service. Oklahoma/southern Kansas Tornado Outbreak of May 3, 1999. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Weather Service, 1999.
Warning: These citations may not always be 100% accurate.