Não informado. (1932). Entomology. U.S. Department of Agriculture, Bureau of Entomology.
Chicago-viite (17. p.)Não informado. Entomology. Washington: U.S. Department of Agriculture, Bureau of Entomology, 1932.
MLA-viite (8. p.)Não informado. Entomology. U.S. Department of Agriculture, Bureau of Entomology, 1932.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.