Scrum: The Art of Doing Twice the Work in Half the Time
Jeff Sutherland
Lean Manufacturing: Tools, Techniques, and How to Use Them
William M Feld
The Professional Scrum Master (PSM I) Guide
Fred Heath
Facebook Marketing: An Hour a Day
Chris Treadaway & Mari Smith
Succeeding With Agile: Software Development Using Scrum
Mike Cohn
Radical Candor: Be a Kick-Ass Boss Without Losing Your Humanity
Kim Scott