United States. Bureau of Entomology. (1919). Sugar maple borer. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Entomology. Sugar Maple Borer. [Washington]: [publisher not identified], 1919.
MLA (9th ed.) CitationUnited States. Bureau of Entomology. Sugar Maple Borer. [publisher not identified], 1919.
Warning: These citations may not always be 100% accurate.