Smithsonian Institution. (1944). 27-day period in Washington precipitation. [s.n.].
Chicago Style (17th ed.) CitationSmithsonian Institution. 27-day Period in Washington Precipitation. [Washington]: [s.n.], 1944.
MLA (9th ed.) CitationSmithsonian Institution. 27-day Period in Washington Precipitation. [s.n.], 1944.
Warning: These citations may not always be 100% accurate.