Masa’deh, R.M.T., Obeidat, B.Y., Zyod, D.S. and Gharaibeh, A.H. 2015. The Associations among Transformational Leadership, Transactional Leadership, Knowledge Sharing, Job Performance, and Firm Performance: A Theoretical Model. Journal of Social Sciences (COES&RJ-JSS). 4, 2 (Apr. 2015), 848–866. DOI:https://doi.org/10.25255/jss.2015.4.2.848.866.