United States. Bureau of Plant Industry. (1919). Inventory of seeds and plants imported by Office of Foreign Seed and Plant Introduction during period from Nov. 1 to Dec. 31, 1919. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Plant Industry. Inventory of Seeds and Plants Imported by Office of Foreign Seed and Plant Introduction During Period from Nov. 1 to Dec. 31, 1919. [Washington]: GPO, 1919.
MLA (9th ed.) CitationUnited States. Bureau of Plant Industry. Inventory of Seeds and Plants Imported by Office of Foreign Seed and Plant Introduction During Period from Nov. 1 to Dec. 31, 1919. GPO, 1919.
Warning: These citations may not always be 100% accurate.