The Great ScrumMaster: #ScrumMasterWay (Addison wesley Signature)

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Agile Game Development: Build, Play, Repeat (Addison Wesley Signature Series/Pearson Addison Wesley)

Agile Game Development with SCRUM (Addison Wesley Signature) Signature Series)

Refactoring: Improving the Design of Existing Code (Pearson Addison Wesley Signature Series)