Não informado. (1961). International Journal of Air and Water Pollution. Pergamon Press.
Chicago (17e ed.) BronvermeldingNão informado. International Journal of Air and Water Pollution. Oxford, Inglaterra: Pergamon Press, 1961.
MLA (8e ed.) BronvermeldingNão informado. International Journal of Air and Water Pollution. Pergamon Press, 1961.
Let op: Deze citaties zijn niet altijd 100% accuraat.