United States. Bureau of Entomology and Plant Quarantine. (1936). Methods and apparatus used in identifying large numbers of leafhoppers of genus Empoasca. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Entomology and Plant Quarantine. Methods and Apparatus Used in Identifying Large Numbers of Leafhoppers of Genus Empoasca. [Washington]: [s.n.], 1936.
MLA (9th ed.) CitationUnited States. Bureau of Entomology and Plant Quarantine. Methods and Apparatus Used in Identifying Large Numbers of Leafhoppers of Genus Empoasca. [s.n.], 1936.
Warning: These citations may not always be 100% accurate.