Não informado. (2009). Water & Wastewater Treatment. Faversham House Group.
Chicago (17e ed.) BronvermeldingNão informado. Water & Wastewater Treatment. London: Faversham House Group, 2009.
MLA (8e ed.) BronvermeldingNão informado. Water & Wastewater Treatment. Faversham House Group, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.