United States. Department of Agriculture. Office of the Secretary. (1931). Methods of crop production at Colby (Kans.) Branch Experiment Station, 1915 to 1929. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary. Methods of Crop Production at Colby (Kans.) Branch Experiment Station, 1915 to 1929. Washington: U.S. GPO, 1931.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary. Methods of Crop Production at Colby (Kans.) Branch Experiment Station, 1915 to 1929. U.S. GPO, 1931.
Warning: These citations may not always be 100% accurate.