1. Addis, B. and Talbot, R. (2001),Sustainable Construction Procurement: A Guide To Delivering Environmentally Responsible Projects, CIRIA C571, CIRIA, London.
2. Business Vantage (2002),Equal Partners–Customer and Supplier Alignment in Construction, Business Vantage Ltd.
3. Connaughton JN, and Green SD. (1996)Value management in construction: a client’s guide, London: CIRIA.
4. Creswell, J.W. (2003),Research Design: Qualitative, Quantitative and Mixed Methods Approaches, 2ndEd., Thousand Oaks, SAGE Publications, California
5. DETR (2000),Building a Better Quality of Life–a Strategy for More Sustainable Construction, Department of the Environment, Transport and the Regions, London