WASET
    Iruka C. Anugwo and  Winston M. Shakantu,  Basic Business-Forces behind the Surviving and Sustainable Organizations: The Case of Medium Scale Contractors in South Africa.   journal   = {International Journal of Industrial and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 110(2). 522 - 529
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10003663.