- AudiolivroConcentrationKam Knight
- AudiolivroThe Art and Science of VisualizationKam Knight
- AudiolivroMind MappingKam Knight
- AudiolivroSpeed ReadingKam Knight
- AudiolivroMind MapsKam Knight
- AudiolivroGoal SettingKam Knight
- AudiolivroSelf-Talk Your Way to SuccesKam Knight
- AudiolivroMemoryKam Knight
- AudiolivroTriple Your Reading, Memory, and Concentration in 30 MinutesKam Knight
- AudiolivroSéries: Mental PerformanceKam Knight