United States. Bureau of Biological Survey. (1940). Economic status of English sparrow in United States. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Biological Survey. Economic Status of English Sparrow in United States. [Washington]: [s.n.], 1940.
MLA (9th ed.) CitationUnited States. Bureau of Biological Survey. Economic Status of English Sparrow in United States. [s.n.], 1940.
Warning: These citations may not always be 100% accurate.