Scrum and XP from theTrenches. How we do Scrum
Henrik Kniberg
Scrum for Dummies
Mark C. Layton & Steven J. Ostermiller & Dean J. Kynaston
The Art and Discipline of Strategic Leadership
Mike Freedman & Benjamin B. Tregoe
Coaching Agile Teams: A Companion for ScrumMasters, Agile Coaches, ...
Lyssa Adkins
Software Testing: A Craftsman’s Approach, Fourth Edition
Paul C. Jorgensen
How to Keep Your Cool: An Ancient Guide to Anger Management
Seneca