United States. Bureau of Biological Survey. (1940). Sullys Hill National Game Preserve, North Dakota. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Biological Survey. Sullys Hill National Game Preserve, North Dakota. [Washington]: [s.n.], 1940.
MLA (9th ed.) CitationUnited States. Bureau of Biological Survey. Sullys Hill National Game Preserve, North Dakota. [s.n.], 1940.
Warning: These citations may not always be 100% accurate.