Management , Seventh Edition
Ricky W. Griffin, Texas A&M University
Related Resources
Chapter 9 Managing Decision Making and Problem Solving
The home page of the Comprehensive Services Act provides a link to a summary page about the Nominal Group Technique.
A book you might find useful is Judgment in Managerial Decision Making by Max Bazerman. See Amazon.com for a description of it.
An example of the effectiveness of group decision making in an educational setting can be found in the concluding section of What Makes These Schools Stand Out.