Library of Congress. Congressional Research Service & ProQuest (Firm). (2008). National Ambient Air Quality Standard for Particulate Matter (PM): EPA's 2006 Revisions and Associated Issues. [publisher not identified].
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). National Ambient Air Quality Standard for Particulate Matter (PM): EPA's 2006 Revisions and Associated Issues. [Place of publication not identified]: [publisher not identified], 2008.
MLA (9th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). National Ambient Air Quality Standard for Particulate Matter (PM): EPA's 2006 Revisions and Associated Issues. [publisher not identified], 2008.
Warning: These citations may not always be 100% accurate.