Não informado. (2001). Annual report of the forest insect survey. Department of Agriculture, Division of Entomology.
Chicago-Zitierstil (17. Ausg.)Não informado. Annual Report of the Forest Insect Survey. Ottawa: Department of Agriculture, Division of Entomology, 2001.
MLA-Zitierstil (8. Ausg.)Não informado. Annual Report of the Forest Insect Survey. Department of Agriculture, Division of Entomology, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.