World Health Organization. (1998). Monitoring ambient air quality for health impact assessment. World Health Organization.
Chicago Style aipamenaWorld Health Organization. Monitoring Ambient Air Quality for Health Impact Assessment. Copenhagen: World Health Organization, 1998.
MLA aipamenaWorld Health Organization. Monitoring Ambient Air Quality for Health Impact Assessment. World Health Organization, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.