World Health Organization & ebrary, Inc. (2006). Air quality guidelines: Global update 2005 : particulate matter, ozone, nitrogen dioxide, and sulfur dioxide. World Health Organization.
Chicago Style (17th ed.) CitationWorld Health Organization and Inc ebrary. Air Quality Guidelines: Global Update 2005 : Particulate Matter, Ozone, Nitrogen Dioxide, and Sulfur Dioxide. Copenhagen, Denmark: World Health Organization, 2006.
MLA (9th ed.) CitationWorld Health Organization and Inc ebrary. Air Quality Guidelines: Global Update 2005 : Particulate Matter, Ozone, Nitrogen Dioxide, and Sulfur Dioxide. World Health Organization, 2006.
Warning: These citations may not always be 100% accurate.