Library of Congress. Congressional Research Service & Blodgett, J. E. (1990). Clean Air Act amendments of 1989: A comparative discussion. Congressional Research Service, Library of Congress.
Chicago Style (17th ed.) CitationLibrary of Congress. Congressional Research Service and John E. Blodgett. Clean Air Act Amendments of 1989: A Comparative Discussion. [Washington, D.C.]: Congressional Research Service, Library of Congress, 1990.
MLA (9th ed.) CitationLibrary of Congress. Congressional Research Service and John E. Blodgett. Clean Air Act Amendments of 1989: A Comparative Discussion. Congressional Research Service, Library of Congress, 1990.
Warning: These citations may not always be 100% accurate.