Não informado. (1969). Insect Pest Survey. Department of Agriculture.
Chicago (17e ed.) BronvermeldingNão informado. Insect Pest Survey. Hobart, Australia: Department of Agriculture, 1969.
MLA (8e ed.) BronvermeldingNão informado. Insect Pest Survey. Department of Agriculture, 1969.
Let op: Deze citaties zijn niet altijd 100% accuraat.