1. John Kelly, Roy Morledge, Sara J., Best Value in Construction, John Wiley & Sons. Copyright., 2009.
2. SAVE International Value Methodology Standard, 2006 Edition.
3. Younker, DL., 2003. Value engineering: analysis and methodology. New York. Marcel Dekker.
4. A Review for the Influence of Climate Change on Development in Egypt in the 21st Century;Maysa Omar;BSC,2013
5. Annual report of the Egyptian Electric Holding Company 2009-2010.