World Health Organization. (2002). Addendum, microbiological agents in drinking water (2nd ed.). World Health Organization.
Chicago-Zitierstil (17. Ausg.)World Health Organization. Addendum, Microbiological Agents in Drinking Water. 2nd ed. Geneva: World Health Organization, 2002.
MLA-Zitierstil (9. Ausg.)World Health Organization. Addendum, Microbiological Agents in Drinking Water. 2nd ed. World Health Organization, 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.