United States. Bureau of Plant Industry. (1911). Distinguishing characters of seeds of quack-grass and of certain wheat-grasses. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Plant Industry. Distinguishing Characters of Seeds of Quack-grass and of Certain Wheat-grasses. [Washington]: GPO, 1911.
MLA (9th ed.) CitationUnited States. Bureau of Plant Industry. Distinguishing Characters of Seeds of Quack-grass and of Certain Wheat-grasses. GPO, 1911.
Warning: These citations may not always be 100% accurate.