World Health Organization. (1998). Monitoring ambient air quality for health impact assessment. World Health Organization.
Chicago-Zitierstil (17. Ausg.)World Health Organization. Monitoring Ambient Air Quality for Health Impact Assessment. Copenhagen: World Health Organization, 1998.
MLA-Zitierstil (8. Ausg.)World Health Organization. Monitoring Ambient Air Quality for Health Impact Assessment. World Health Organization, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.