United States & Commerce Clearing House. (1990). Clean Air Act: Law and explanation : reflecting the Clean Air Act amendments of 1990 signed by the President as P.L. 101-549 on November 15, 1990. Commerce Clearing House.
Chicago Style (17th ed.) CitationUnited States and Commerce Clearing House. Clean Air Act: Law and Explanation : Reflecting the Clean Air Act Amendments of 1990 Signed by the President as P.L. 101-549 on November 15, 1990. Chicago, Ill. (4025 W. Peterson Ave., Chicago 60646): Commerce Clearing House, 1990.
MLA (9th ed.) CitationUnited States and Commerce Clearing House. Clean Air Act: Law and Explanation : Reflecting the Clean Air Act Amendments of 1990 Signed by the President as P.L. 101-549 on November 15, 1990. Commerce Clearing House, 1990.
Warning: These citations may not always be 100% accurate.