Crystal X. Jiang and  Tess Han and  George J. Titus and  Matthew J. Liberatore,  Differences in IT Effectiveness among Firms: An Empirical Investigation.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2010, vol. 43(7). 1721 - 1730
    [viewed 22 May 2022]. Available from: https://publications.waset.org/pdf/5693.