United States. Bureau of Plant Industry. (1919). Plant immigrants. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Plant Industry. Plant Immigrants. [Washington]: [publisher not identified], 1919.
MLA (9th ed.) CitationUnited States. Bureau of Plant Industry. Plant Immigrants. [publisher not identified], 1919.
Warning: These citations may not always be 100% accurate.