WASET
    Gülcin Büyüközkan and  Mehmet Sakir Ersoy,  Applying Fuzzy Decision Making Approach to IT Outsourcing Supplier Selection.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2009, vol. 31(7). 815 - 819
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/14534.