International Water Association & IWA Programme Committee. (2004). 4th World Water Congress: Innovation in Drinking Water Treatment: Selected Papers of the 4th World Water Congress : International Water Association : held in Marrakech, Morocco : 19-24 September 2004. IWA Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Water Association και IWA Programme Committee. 4th World Water Congress: Innovation in Drinking Water Treatment: Selected Papers of the 4th World Water Congress : International Water Association : Held in Marrakech, Morocco : 19-24 September 2004. [London]: IWA Publishing, 2004.
Παραπομπή σε μορφή MLA (9th εκδ.)International Water Association και IWA Programme Committee. 4th World Water Congress: Innovation in Drinking Water Treatment: Selected Papers of the 4th World Water Congress : International Water Association : Held in Marrakech, Morocco : 19-24 September 2004. IWA Publishing, 2004.