1. Aguinis, H. 2004. Regression Analysis For Categorical Moderators. New York: The Guilford Press.
2. CCM. 2008. R&D Companies Financial Performance. Kuala Lumpur: Commission Companies of Malaysia.
3. Unraveling the determinants and consequences of an innovation supportive culture;Chandler;Entrepreneurship Theory and Practice,2000
4. Relationship Between Strategic Human Resource Management and Firm Performance;Chang;International Journal of Manpower,2005
5. Daft, R.L. 2000. Organization Theory and Design. (7th Ed.) South-Western College Publishing, Thomson Learning. U.S.A.