1. World Report on Road Traffic Injury Prevention;World Health Organization,2004
2. The Global Burden of Disease 2000 Project: Aims, Methods and Data Sources;Murray,2001
3. E.A. Kopits, Traffic Fatalities and Economic Growth, Dissertation Submitted to the Faculty of the Graduate School of the University of Maryland, College Park in Partial Fulfilment of the Requirements for the Degree of Doctor of Philosophy, 2004.
4. Royal Police Malaysia (PDRM), Traffic Branch, Bukit Aman, July 2011.