James M. Kouzes
Robert L. Mathis
United States. General Accounting Office
Alina Wheeler
Donald L. Kirkpatrick
Kate Black
Wendell L. French
Robert A. Baron
Tom Redman
Kenneth Richmond Andrews
Gillian Jones
Iain Henderson
Penny L. Ittner
Foundation for Research on Human Behavior.
Claretha Hughes
Alan B. Clardy
Gundars Kaupins
British Institute of Management.
Henry Mintzberg