[DirectX 5 Programmer's Reference] Legal Information (100%)

[DirectX 6 Programmer's Reference] Legal Information (100%)

[DirectX October 2006 Documentation] Legal Information (100%)

[DirectX 8.1 Visual Basic Programmer's Reference] Legal Information (76.9230769230769%)

DirectX 8.1 (Visual Basic)

[DirectX October 2006 Documentation] Legal Information (73.5294117647059%)

DirectX SDK

[DirectX 7 Programmer's Reference] Legal Information (57.1428571428571%)

Microsoft DirectX 7.0