World Health Organization. (1999). Guidelines for drinking-water quality, volume 3: Surveillance and control of community supplies (2nd ed.). World Health Organization.
Citazione stile Chigago Style (17a edizione)World Health Organization. Guidelines for Drinking-water Quality, Volume 3: Surveillance and Control of Community Supplies. 2nd ed. Geneva: World Health Organization, 1999.
Citatione MLA (8a ed.)World Health Organization. Guidelines for Drinking-water Quality, Volume 3: Surveillance and Control of Community Supplies. 2nd ed. World Health Organization, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.