00504pamaa2200169 4500 0000018428 20100511090000.0 0471121223 658.4092 BRA HD57.7 BRA 1998 BRADFORD Power up : transforming organizations through shared leadership David L. Bradford and Allan R. Cohen. New York: John Wiley, 1998. xix, 364p.: 24cm. Organizational change Leadership COHEN, Allan R.