[DirectX 7 Programmer's Reference] Periodic Effects (77.2727272727273%)
Microsoft DirectX 7.0 > DirectInput > DirectInput Essentials > Force Feedback > Effect Types
[DirectX 8.1 C/C++ Programmer's Reference] Periodic Effects (75%)
DirectX 8.1 (C++) > DirectInput > Using DirectInput > Force Feedback > Effect Types
[DirectX 8.1 Visual Basic Programmer's Reference] Periodic Effects (75%)
DirectX 8.1 (Visual Basic) > DirectInput > Using DirectInput > Force Feedback > Effect Types
[DirectX 5 Programmer's Reference] Periodic Effects (36.8792971734148%)
DirectX Foundation > DirectInput > DirectInput Essentials > Force Feedback
[DirectX 6 Programmer's Reference] Periodic Effects (36.8792971734148%)
DirectX Foundation > DirectInput > DirectInput Essentials > Force Feedback