United States. Bureau of Biological Survey. (1940). Ornamental Woody Plants Attractive to Birds, Mar. 1940. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Biological Survey. Ornamental Woody Plants Attractive to Birds, Mar. 1940. [Washington]: [s.n.], 1940.
MLA (9th ed.) CitationUnited States. Bureau of Biological Survey. Ornamental Woody Plants Attractive to Birds, Mar. 1940. [s.n.], 1940.
Warning: These citations may not always be 100% accurate.