United States. Bureau of Plant Industry. (1922). Plant disease bulletin issued by Plant Disease Survey, supplement 21: Diseases of cereal and forage crops in U.S. in 1921. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Plant Industry. Plant Disease Bulletin Issued by Plant Disease Survey, Supplement 21: Diseases of Cereal and Forage Crops in U.S. in 1921. [Washington]: [publisher not identified], 1922.
MLA (9th ed.) CitationUnited States. Bureau of Plant Industry. Plant Disease Bulletin Issued by Plant Disease Survey, Supplement 21: Diseases of Cereal and Forage Crops in U.S. in 1921. [publisher not identified], 1922.
Warning: These citations may not always be 100% accurate.