1. Foundation course in environmental auditing,1997
2. Using process integration technology for cleaner production;Dunn;Journal of Cleaner Production,2001
3. Jordan Paper and Cardboard Factories (JPCF), Co. Ltd, Zarka, Jordan, 2000.
4. National environmental strategy for Jordan, a resource book of information and guidelines for action;McEachern,1991
5. Wastewater engineering, treatment, disposal and reuse;Metcalf,1991