Citadels Under Attack (Unabridged)
2020
The War of the Cybernauts (Unabridged)
2019
The Plague of Sound (Unabridged)
2019
The Lion Men of Mongo (Unabridged)
2019
The Witch Queen of Mongo (Unabridged)
2019
The Growth Department: How Account Management and Customer Success Become the Revenue Engine (Unabridged)
2026