Authors
Harry and Christine's books have sold over 1.2 million copies in 23 translations, and earned the following recognition:
Best Business Books of All Time (RateItall.com)
Competitive Advantage, Michael Porter
Beyond Reengineering, Michael Hammer
Leading Change, John P. Kotter
Selling the Invisible
Notable Books of the Year (2007, American Booksellers' Association)
You, Inc.
Best Business Audio Books of 2004 (AudioFile)
What Clients Love
These books are cited and recommended in over 70 business and management books.