WASET
    Suwardo and  Madzlan B. Napiah and  Ibrahim B. Kamaruddin,  On-Time Performance and Service Regularity of Stage Buses in Mixed Traffic.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2009, vol. 31(7). 290 - 297
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/11851.