SAFe Reference Guide: Scaled Agile Framework for Lean Enterprises
Dean Leffingwell
100+ Tips for Saving Money
MakeUseOf
Business Process Management: Practical Guidelines to Successful ...
John Jeston & Johan Nelis
The agile PMO
Michael Nir
Practices for Scaling Lean & Agile Development
Craig Larman & Bas Vodde
Scrum Mastery (Geoff Watts' Agile Mastery Series)
Geoff Watts