1. Addo, S. T. (2002). Provision of urban transport services in Accra. http://www.ssatp.org/sites/ssatp/files/publications/Presentations/UrbanTransportServices-Accra.pdf
2. Agyemang, W. (2013). Measurement of Service Quality of “ Trotro ” As Public Transportation in Ghana: a case study of the city of Kumasi. 32nd Southern African Transport Conference, Pretoria.
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4. Browning, P. (2001). Wealth on wheels? The minibus-taxi, economic empowerment and the new passenger transport policy. 20th South African Transport Conference, Pretoria. https://repository.up.ac.za/handle/2263/8069