Full disclosure; the links below are to my Amazon Associates account, and so I would get a little financial kickback if you decided to purchase. Also, take a look at highlights under the Categories tab.

• Accelerate: The Science of Lean Software and DevOps: Building and Scaling High Performing Technology Organizations by Nicole Forsgren PhD, Jez Humble, Gene Kim
• Designing Delivery by Jeff Sussna
• The Phoenix Project by Gene Kim
• The Lean Startup: How Constant Innovation Creates Radically Successful Businesses by Eric Ries
• The Lean Mindset: Ask the Right Questions by Mary Poppendieck & Tom Poppendieck
• Brownfield Application Development in .NET by Donald Belcham & Kyle Baley
• Preventing Good People From Doing Bad Things: Implementing Least Privilege by John Mutch & Brian Anderson
• Continuous Delivery: Reliable Software Releases Through Build, Test, and Deployment Automation by Jez Humble & David Farley
• Good Strategy/Bad Strategy: The difference and why it matters by Richard Rumelt
• Lean Enterprise: How High Performance Organizations Innovate at Scale by Jez Humble, Joanne Molesky, and Barry O’Reilly
• The Art of Monitoring by James Turnbull and Sid Orlando
• Leading the Transformation: Applying Agile and DevOps Principles at Scale by Gary Gruver, Tommy Mouser, and Gene Kim