1. The Legislative History of U.S. Air Pollution Control;Reitze,1999
2. C&EN (Chemical & Engineering News). Recognizing pollution’s hazard’s, C&E News 2003;81(15):54–55.
3. Dunn S. King coal’s weakening grip on power. World watch 1999, p. 10–19.
4. Complying with EPA Regulations: How Big a Challenge Is It?;Hobson,2012
5. Air Pollution: Its Origin and Control;Wark,1998