WASET
    A. Leśniak and  E. Plebankiewicz and  K. Zima,  Procurement for Management Services in Delivery of Public Construction Projects in Poland.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2012, vol. 67(7). 1734 - 1738
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/1735.