WASET
    R. Kozik and  A. Leśniak A. and  E. Plebankiewicz,  Evaluation and Selection of Construction Contractors by Polish Public Clients.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2015, vol. 98(2). 454 - 457
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10000423.