WB
Warren Bennis
Warren Gamaliel Bennis was an American scholar, organizational consultant and author, widely regarded as a pioneer of the contemporary field of Leadership studies. Bennis was University Professor and Distinguished Professor of Business Administration and Founding Chairman of The Leadership Institute at the University of Southern California.
Excerpt from Wikipedia, available under CC BY-SA 4.0.
Books

Why Leaders Can't Lead
1997
ISBN 9780787909437
Co-Leaders The Power of Great Partnerships
2000
ISBN 9780471361206
Transparency
2009
ISBN 9780470369159