Rizwan Moeen and  Riaz Ahmad and  Tanweer Ul Islam and  Shahid Ikramullah and  Muhammad Umer,  Supplier Sift – A Strategic Need of Modern Entrepreneurship.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 78(6). 1879 - 1884
    [viewed 27 October 2021]. Available from: https://publications.waset.org/pdf/12061.