United States. Bureau of Plant Industry. (1920). Plant disease bulletin issued by Plant Disease Survey, supplement 9: Diseases of fruit crops in U.S. in 1919. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Plant Industry. Plant Disease Bulletin Issued by Plant Disease Survey, Supplement 9: Diseases of Fruit Crops in U.S. in 1919. [Washington]: [publisher not identified], 1920.
MLA (9th ed.) CitationUnited States. Bureau of Plant Industry. Plant Disease Bulletin Issued by Plant Disease Survey, Supplement 9: Diseases of Fruit Crops in U.S. in 1919. [publisher not identified], 1920.
Warning: These citations may not always be 100% accurate.