The Tyrant's Tomb
Rick Riordan
The Trials of Apollo (4)
How to Break a Dragon's Heart
Cressida Cowell
How to Train Your Dragon (8)
The Demigod Files
Percy Jackson and the Olympians (4.5)
How to Train Your Dragon
How to Train Your Dragon (1)
How to Cheat a Dragon's Curse
How to Train Your Dragon (4)
How to Seize a Dragon's Jewel
How to Train Your Dragon (10)