United States. Bureau of Plant Industry & Knapp, S. A. (1909). Selection of cotton and corn seed for Southern farms. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Plant Industry and Seaman Ashahel Knapp. Selection of Cotton and Corn Seed for Southern Farms. Washington, D.C.: [publisher not identified], 1909.
MLA (9th ed.) CitationUnited States. Bureau of Plant Industry and Seaman Ashahel Knapp. Selection of Cotton and Corn Seed for Southern Farms. [publisher not identified], 1909.
Warning: These citations may not always be 100% accurate.