Não informado. (2001). Annual report of the forest insect survey. Department of Agriculture, Division of Entomology.
Chicago (17e ed.) BronvermeldingNão informado. Annual Report of the Forest Insect Survey. Ottawa: Department of Agriculture, Division of Entomology, 2001.
MLA (8e ed.) BronvermeldingNão informado. Annual Report of the Forest Insect Survey. Department of Agriculture, Division of Entomology, 2001.
Let op: Deze citaties zijn niet altijd 100% accuraat.