Não informado. (1967). Environmental Science & Technology. American Chemical Society.
Chicago (17e ed.) BronvermeldingNão informado. Environmental Science & Technology. Easton, Pa: American Chemical Society, 1967.
MLA (8e ed.) BronvermeldingNão informado. Environmental Science & Technology. American Chemical Society, 1967.
Let op: Deze citaties zijn niet altijd 100% accuraat.