GPU Pro 5: Advanced Rendering Techniques - Hardcover By Engel, Wolfgang - GOOD

GPU Pro 6: Advanced Rendering - Hardcover, by Engel Wolfgang - Very Good

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Shader X6 : Advanced Rendering Techniques by Wolfgang F. Engel

GPU Pro 2: Advanced Rendering Techniques: 02, Engel, Wolfgang, Used; Good Book

GPU Pro2: Advanced Rendering Techniques by Engel, Wolfgang

ShaderX4: Advanced Rendering - Hardcover, by Engel Wolfgang - Very Good

ShaderX7: Advanced Rendering Techniques by Wolfgang Engel