World Health Organization. (1999). Guidelines for drinking-water quality, volume 3: Surveillance and control of community supplies (2nd ed.). World Health Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Health Organization. Guidelines for Drinking-water Quality, Volume 3: Surveillance and Control of Community Supplies. 2nd ed. Geneva: World Health Organization, 1999.
Παραπομπή σε μορφή MLA (8th εκδ.)World Health Organization. Guidelines for Drinking-water Quality, Volume 3: Surveillance and Control of Community Supplies. 2nd ed. World Health Organization, 1999.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.