Παραπομπή σε μορφή APA (7η εκδ.)

World Health Organization & Schmoll, O. (2006). Protecting groundwater for health: Managing the quality of drinking-water sources. IWA Pub..

Παραπομπή σε μορφή Chicago (17η εκδ.)

World Health Organization και Oliver Schmoll. Protecting Groundwater for Health: Managing the Quality of Drinking-water Sources. London: IWA Pub., 2006.

Παραπομπή σε μορφή MLA (9th εκδ.)

World Health Organization και Oliver Schmoll. Protecting Groundwater for Health: Managing the Quality of Drinking-water Sources. IWA Pub., 2006.