Agile Adoption Patterns: A Roadmap to Organizational Success by Amr Elssamadisy
Agile and Iterative Development: A Manager’s Guide by Craig Larman
Agile Estimating and Planning by Mike Cohn
Agile Project Management: Creating Innovative Products by Jim Highsmith
Agile Retrospectives: Making Good Teams Great by Esther Derby and Diana Larsen
Agile Software Development by Alistair Cockburn
Agile Software Development with Scrum by Ken Schwaber and Mike Beedle
Becoming Agile: ...in an imperfect world by Greg Smith and Dr. Ahmed Sidky
The Business Value of Agile Software Methods: Maximizing Roi with Just-In-Time Processes and
Documentation by David F. Rico, Hasan H. Sayani, and Saya Sone
Collaboration Explained by Jean Tabaka
Crystal Clear: A Human-Powered Methodology for Small Teams by Alistair Cockburn
Encyclopedia of Software Engineering edited by Phillip A. Laplante
Extreme Programming Explained: Embrace Change by Kent Beck
Fearless Change by Linda Rising and Mary Lynn Manns
Innovation Games: Creating Breakthrough Products Through Collaborative Play by Luke Hohmann
Lean Software Development – An Agile Toolkit for Software Development Managers by Mary and
Tom Poppendieck
Lean Solutions by Jim Womack and Dan Jones
Lean Thinking by Jim Womack and Dan Jones
Managing Agile Projects by Sanjiv Augustine
Managing the Design Factory by Donald G. Reinertsen
Planning Extreme Programming by Kent Beck and Martin Fowler
Scaling Lean & Agile Development: Thinking and Organizational Tools for Large-Scale Scrum by
Craig Larman and Bas Vodde
The Software Project Manager's Bridge to Agility by Michele Sliger and Stacia Broderick
User Stories Applied by Mike Cohn
You can also go to http://agilescout.com as a great resource! :)