United States. Department of Agriculture. (1931). Corn futures; volume of trading, open commitments, and prices, from Jan. 3, 1921 to Dec. 31, 1929. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Corn Futures; Volume of Trading, Open Commitments, and Prices, from Jan. 3, 1921 to Dec. 31, 1929. [Washington]: GPO, 1931.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Corn Futures; Volume of Trading, Open Commitments, and Prices, from Jan. 3, 1921 to Dec. 31, 1929. GPO, 1931.
Warning: These citations may not always be 100% accurate.