1. World Population Prospects: The 2004 Revision.
2. HUMAN DEVELOPMENT REPORT 2004.
3. Report of the World Summit on Sustainable Development Johannesburg, South Africa, 26 August- 4 September 2002.
4. Doukas H. and John Psarras; Renewable energy sources and rationale use of energy development in the countries of GCC: Myth or reality? Renewable Energy 31 (2006) 755–770.
5. Al-Joburi Khalil., Geospatial Approach for Analyzing Soil Type Impact on Bahrain Deteriorating Houses; International Journal of Geosciences and Geomatics, Vol. 3, Issue 1, 2015,ISSN:2052-5591.