United States. Agricultural Adjustment Administration. (1936). 1936 agricultural conservation program, north central region: The states of Ohio, Indiana, Illinois, Michigan, Wisconsin, Minnesota, Iowa, Missouri, South Dakota, and Nebraska. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Agricultural Adjustment Administration. 1936 Agricultural Conservation Program, North Central Region: The States of Ohio, Indiana, Illinois, Michigan, Wisconsin, Minnesota, Iowa, Missouri, South Dakota, and Nebraska. [Washington]: [s.n.], 1936.
MLA (9th ed.) CitationUnited States. Agricultural Adjustment Administration. 1936 Agricultural Conservation Program, North Central Region: The States of Ohio, Indiana, Illinois, Michigan, Wisconsin, Minnesota, Iowa, Missouri, South Dakota, and Nebraska. [s.n.], 1936.