- AudiolivroQuantum Physics for Beginners Who Flunked Math And ScienceDonald B. Grey
- Audiolivro50 Quantum Physics Questions In Plain Simple English Book 1Donald B. Grey
- AudiolivroThe 60 Minute Quantum Physics BookDonald B. Grey
- AudiolivroQuantum Physics in MinutesDonald B. Grey
- AudiolivroThe Universe Has A NumberDonald B. Grey
- AudiolivroQuantum Physics Made EasyDonald B. Grey
- AudiolivroNumerology Made EasyDonald B. Grey