Cohen, Dan S. The heart of change field guide: tools and tactics for leading change in your organizations/ Dan S.Cohen, John P Kotter - 5th ed - Boston, Mass : Harvard Business School Press, 2005 - xiv, 239p. : colour illustrations. ; 24cm. Includes index ISBN: 9781591397755 paperback RM112.00 Subjects--Topical Terms: Organizational change Dewey Class. No.: 658.406 COH