WASET
    Safdar Muhammad Usman and  Youji Kohda and  Katsuhiro Umemoto,  Value Co-Creation in Used-Car Auctions: A Service Scientific Perspective.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    September 2014, vol. 93(9). 3050 - 3055
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/9999457.