1. Clean Air Act Amendments of 1970, Public Law 91-604, December 31, 1970. http://www.epa.gov/air/caa/ Clean Air Act. The most current version: http://epa.gov/oar/caa/title1.html
2. Environmental and Health & Safety Management: A Guide to Compliance;Cheremisinoff,1995
3. U.S. Environmental Protection Agency, 33/50 Program: The Final Record, EPA-745/R-99-004,1999
4. Requirements for Preparation, Adoption, and Submittal for Implementation Plans, 40 Code of Federal Regulations § 51.100(s).
5. National Air Pollutant Emission Trends, 1900-1996, EPA-454/R-97-011, NTIS PB98-153158;Nizich,1997