United States. Bureau of Plant Industry. (1940). Maintaining identity and pure seed of southern oat varieties. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Plant Industry. Maintaining Identity and Pure Seed of Southern Oat Varieties. [Washington]: [s.n.], 1940.
MLA (9th ed.) CitationUnited States. Bureau of Plant Industry. Maintaining Identity and Pure Seed of Southern Oat Varieties. [s.n.], 1940.
Warning: These citations may not always be 100% accurate.