United States. Bureau of the Census. (1930). Fifteenth Census of U.S., 1930. Drainage of agricultural lands: Reports by States, with statistics for counties, summary for U.S., and synopsis of drainage laws. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of the Census. Fifteenth Census of U.S., 1930. Drainage of Agricultural Lands: Reports by States, with Statistics for Counties, Summary for U.S., and Synopsis of Drainage Laws. [Washington]: GPO, 1930.
MLA (9th ed.) CitationUnited States. Bureau of the Census. Fifteenth Census of U.S., 1930. Drainage of Agricultural Lands: Reports by States, with Statistics for Counties, Summary for U.S., and Synopsis of Drainage Laws. GPO, 1930.
Warning: These citations may not always be 100% accurate.