1. ADB. (2003). Reducing vehicle emissions in Asia, Asian Development Bank, Manila.
http://www.adb.org/documents/guidelines/Vehicle_Emissions/reducing_vehicle_emissions.pdf
.
2. Anderson, D., & McCullough, G. (2000). The full cost of transportation in the twin cities region, Centre for Transportation Studies, University of Minnesota, Minneapolis, USA.
3. Bhattacharyya, S. C. (1996). A preliminary estimate of the external costs of energy use in the transport sector: a case study of India, Opec Review, September 1996, pp. 247–260.
4. Delft. (2008). Handbook on estimation of external costs in the transport sector: Internalisation measures and policies for all external costs of transport, Delft, The Netherlands.
5. Delucchi, M. A. (1998). The annualized social cost of motor vehicle use in the US, 1990–91, Summary of theory, data, methods and results, Institute of Transportation Studies, University of California, Davis, California, USA.