Agile Contracts Primer
Craig Larman & Bas Vodde & Tom Arbogast
Science of Success
Napoleon Hill
Modern TRIZ: A Practical Course With EASyTRIZ Technology
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The Standard for Program Management
Project Management Institute
Scrum and XP from the Trenches How We Do Scrum - 2nd. Edition
Henrik Kniberg
Business Process Improvement Toolbox
Bjørn Andersen