PMO Principles
Eileen J. Roden & Robert Joslin & Ralf Müller & Lindsay Scott
Leading Change
John P. Kotter
PMP Project Management Professional Practice Exams
James L. Haner
JIRA Agile Essentials
Patrick Li
Industrial Project Management: Concepts, Tools, and Techniques
Adedeji Badiru & Abidemi Badiru & Adetokunboh Badiru
Scrum Basics
Ken Schwaber
The Scrum Guide