The original guide to the ideas of leading management thinkers has been updated, now with 10 new full-length entries. From classic gurus such as Henry Gantt and the Gilbreth time-and-motion pioneers to the latest thinkers influencing 21st-century business, the lives and work of more than 55 gurus are covered in clear and accessible style. Also covered are Clayton Christensen, master of innovation theory, Karen Stephenson's ground-breaking insights into human networks, and penetrating analysis of all gurus' ideas and influence on management. Each entry includes a brief biography and a list of important source titles.