1. Adair, J.K. (2006). Leadership and motivation: The fifty-fifty rule and the eight key principles of motivating others. UK: Kogan Page Limited.
2. Individual consideration viewed at multiple levels of analysis: A multi-level framework for examining the diffusion of transformational leadership;Avolio;The Leadership Quarterly,1995
3. Beebe, S.A. & Masterson, J.T. (2011). Communicating in small groups: Principles and practices (10th Eds.). Pearson.
4. Daniels, T.D., Spiker, B.K. & Papa, M.J. (1997). Perspective on organizational communication (4th Eds.). Brown & Benchmark Publishers.
5. Leadership= communication? The relations of leaders’ communication styles with leadership styles, knowledge sharing and leadership outcomes;De Vries;Journal of Business and Psychology,2010