1. Coombe, D., Mellor. A. 1986. The Role of Paratransit, Moving People in Tomorrow's World: Proceedings of a Conference Organized by the Institute of Civil Engineers. Thomas Telford. London. 103-116.
2. Department of Transportation and Communications. 1980-1989. Manila. Philippines.
3. Dhaka Metropolitan Police Commissioner Office. 1987. Bangladesh.
4. ESCAP/UNCHS. 1987. Study on the Role of Informal Paratransit in the Socio-Economic Development of Urban Areas. Bangkok. Thailand.