David E. Rye
Career Press, 2000
(6)
Donna Dunning
Nicholas Brealey Publishing, 2010
(8)
Carmine Gallo
Sourcebooks, 2005
Scott Richardson and Steve Chandler
Career Press, 2004
(7)
Lisa Kanarek
Rodd Wagner and James K. Harter
Gallup Press, 2006
(9)
Joey Asher
Persuasive Speaker Press, 2010
Peter Bregman
Business Plus, 2011
Alan Axelrod and Jim Holtje
McGraw-Hill, 1997
(5)
Mike Phipps and Colin Gautrey
Capstone, 2005
Stephan Schiffman
Adams Media, 2005
Gail Z. Martin
Career Press, 2010
Mark R. Edwards and Ann J. Ewen
AMACOM, 1996
Anita Bruzzese
Perigee, 2007
John Cioffi and Ken Willig
Project Management Institute
Project Mgmt Inst., 2008
James M. Kouzes and Barry Z. Posner
Jossey-Bass, 2006
Anne Loehr and Brian Emerson
AMACOM, 2008
Charles Patrick Garcia
John Wiley & Sons, Inc., 2003
Gini Graham Scott
AMACOM, 2005
Peninah Thomson et al.
Palgrave Macmillan, 2008
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