Library of Congress. Congressional Research Service & ProQuest (Firm). (1989). Comparison of H.R. 3030/S. 1490 and S. 1630 with the Clean Air Act. [publisher not identified].
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). Comparison of H.R. 3030/S. 1490 and S. 1630 with the Clean Air Act. [Place of publication not identified]: [publisher not identified], 1989.
MLA (9th ed.) CitationLibrary of Congress. Congressional Research Service and ProQuest (Firm). Comparison of H.R. 3030/S. 1490 and S. 1630 with the Clean Air Act. [publisher not identified], 1989.
Warning: These citations may not always be 100% accurate.