Accelerate: The Science of Lean Software and DevOps: Building and Scaling High Performing Technology Organizations
Software Estimation: Demystifying the Black Art (Developer Best Practices)
Scrum and XP from the Trenches - 2nd Edition
This book aims to give you a head start by providing a detailed down-to-earth account of how one Swedish company implemented Scrum and XP and how they continuously improved their process.
Code Complete: A Practical Handbook of Software Construction, Second Edition
Site Reliability Engineering: How Google Runs Production Systems