4Jackson, S. E., Schuler, R. S. 'J Under- standing Human Resource Management in the Contexe of Organizations and Their Environments, "in Spence. An- nual Review of Psychology, 2013,1(6) : 125-126.
5Ireland RD,Hitt MA.Achieving and maintaining strategic competitiveness in the 21st century:The role of strategic leadership.The Academy of Manage- ment Journal,2012,11(11):531-532.