Below I have posted some recommended reading material for those interested in learning more about Systems Thinking.
Booklist and links below
Out of the Crisis – W. Edwards Deming
Workplace Management – Taiichi Ohno
Freedom From Command and Control – John Seddon
Moon Shots For Management – Gary Hemel
Discussing the Undiscussable – William R Noonan
One More Time: How Do You Motivate Employees – Fredrick Herzberg
Drive: The Surprising Truth About What Motivates Us – Dan Pink
Understanding Variation: The Key to Managing Chaos – Donald Wheeler
Leading Lean Software Development – Mary and Tom Poppendieck
The Four Steps to the Epiphany – Steve Blank
The Leaders Handbook – Peter R Scholtes
Agile, Lean, Kanban, and System Thinking 
great list
Amazing list. Wheeler is an old favorite. Pink and and Blank are recent reads of mine. Deming, Ohno, and Scholtes are classics. I even liked Seddon’s book.