United States. Bureau of Agricultural Chemistry and Engineering. (1940). Machinery for growing corn. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Agricultural Chemistry and Engineering. Machinery for Growing Corn. [Washington]: [s.n.], 1940.
MLA (9th ed.) CitationUnited States. Bureau of Agricultural Chemistry and Engineering. Machinery for Growing Corn. [s.n.], 1940.
Warning: These citations may not always be 100% accurate.