Haweel, M. H., A. N. H. ziad, H. Elawady, and yehya Mesalam. “The Impacts of Human Resource Management Practices on Company Labor Productivity: Empirical Evidence from Iron and Steel Company in Libya”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 15, no. 1, Jan. 2016, pp. 19-33, https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/1225.