Não informado. (1888). Insect life. Department of Agriculture, Division of Entomology.
Chicago-referens (17:e uppl.)Não informado. Insect Life. Washington: Department of Agriculture, Division of Entomology, 1888.
MLA-referens (8:e uppl.)Não informado. Insect Life. Department of Agriculture, Division of Entomology, 1888.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.