1. Malaysia, Economic Planning Unit, Prime Minister’s Department (2006). Ninth Malaysian Plan 2006-2010. Percetakan Nasional Malaysia Berhad, Kuala Lumpur.
2. Egbu C.O. (1994). Management education and training for refurbishment work within the construction industry, PhD thesis Department of Civil Engineering, University of Salford, UK.
3. Rahmat I. (1997). The planning and control process of refurbishment projects, PhD thesis, University College London, UK.
4. Involvement of key design participants in refurbishment design process