Scrum and XP from theTrenches. How we do Scrum
Henrik Kniberg
The Confident Mind: A Battle-Tested Guide to Unshakable Performance
Dr. Nate Zinsser
The Nexus Framework for Scaling Scrum
Kurt Bittner & Patricia Kong & Dave West
97 Things Every Scrum Practitioner Should Know
Gunther Verheyen
Project Management A Systems Approach to Planning, Scheduling, ...
Harold Kerzner
The Well-Timed Strategy: Managing the Business Cycle for Competitive ...
Peter Navarro