• Azhar kazmi, 2015, strategic management and business policy, published by Tata McGraw-hill, new Delhi
• Asterios G.kefalas, 2016, global business strategy: a system approach published by south western publishing co., Zurich, Switzerland
• Ahmad Ghayoumi and Mehdi Ghayoumi, 2001, Developing of Intelligent Schools with a New Model of Strategic Management System, World Academy of Science, and Technology 60 2011.
• Teresa Mwuese Nmadu, September 2011 , STRENGTH, WEAKNESS, OPPORTUNITY AND THREAT ANALYSIS (SWOTA), University of Jos, P.M.B.2084 Jos
• Over view , http://en.wikipedia.org/wiki/Strategic_management
• Porter, M.E. (1985) Competitive Advantage, Free Press, New York,
• Jack welches and john a. byrne 2002, straight from the gut, grand central publishing, page 390.
• Azhar kazmi, 2008, strategic management and business policy, published by Tata McGraw-hill, new Delhi