Não informado. Environmental Pollution and Control. U.S. Department of Commerce, National Technical Information Service.
Chicago (17e ed.) BronvermeldingNão informado. Environmental Pollution and Control. Springfield, Va: U.S. Department of Commerce, National Technical Information Service.
MLA (8e ed.) BronvermeldingNão informado. Environmental Pollution and Control. U.S. Department of Commerce, National Technical Information Service.
Let op: Deze citaties zijn niet altijd 100% accuraat.