1. Bacero, R.S. and Vergel, K, 2009. Assessment of Jeepney’s components, systems and separate technical units for the development of standards. Proceedings of the 17th Annual Conference of the Transportation Science Society of the Philippines.
2. Paratransit in Southeast Asia: a market response to poor roads?;Cervero;Review of Urban and Regional Development Studies,1992
3. Informal Transport: A Global Perspective;Cervero;Transportation Policy,2007
4. Chen, L, Yang, F, Cheng, Y, Yao, Z. and Zhang, X, 2014. Urban Public Transport Choice Behavior Analysis and Service Improvement Policy-Making: A Case Study from The Metropolitan City, Chengdu, China, TRB 2014 Annual Meeting.
5. Impacts of Government regulation on the sustainability of paratransit services in the Philippines: Case of FX services between Manila city and Quezon city;Diaz;Journal of the Eastern Asia Society for Transportation Studies,2005