Dyfyniad APA

World Health Organization. (1998). Monitoring ambient air quality for health impact assessment. World Health Organization.

Dyfyniad Arddull Chicago

World Health Organization. Monitoring Ambient Air Quality for Health Impact Assessment. Copenhagen: World Health Organization, 1998.

Dyfyniad MLA

World Health Organization. Monitoring Ambient Air Quality for Health Impact Assessment. World Health Organization, 1998.

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