Glenn is the author of over 25 books including several best-sellers such as Team Payers and Teamwork, Rewarding Teams: Lessons from the Trenches, and Cross Functional Teams: Working with Allies, Enemies and Other Strangers; widely used instruments such as the Parker Team Player Survey and manuals for practitioners such as 50 Activities for Team Building, 25 Instruments for Team Building, and Team Workout: 50 Interactive Activities. He has recenlty completed the new Parker Team Skills Series of 10 concise informational booklets.