Library of Congress. Congressional Research Service & ProQuest (Firm). (1985). Clean Air Act Provisions Having Specific Reference to National Parks, and Relevant Litigation. [publisher not identified].
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). Clean Air Act Provisions Having Specific Reference to National Parks, and Relevant Litigation. [Place of publication not identified]: [publisher not identified], 1985.
MLA (9th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). Clean Air Act Provisions Having Specific Reference to National Parks, and Relevant Litigation. [publisher not identified], 1985.
Warning: These citations may not always be 100% accurate.