1. Barnard, C. I. The Functions of an Executive. Harvard Univ. Press, Cambridge, MA. 1938.
2. Bass, B. M. Stogdill’s Handbook of Leadership. Free Press, New York. 1981.
3. Beruhe, B. G. “A Whistle-Blower’s Perspective of Ethics in Engineering.” Engineering Education February 1988, pp. 294-295.
4. Blake, R. R. and Mouton, J. S. The Managerial Grid. Gulf Publishing, Houston, TX. 1964.
5. Blake, R. R.; Mouton, J. S.; Barnes, J. S.; and Greiner, L. E. “Breakthrough in Organizational Development.” Harvard Business Review. 1964. 42:133–155.