How to Steal a Dragon's Sword
Cressida Cowell
How to Train Your Dragon (9)
The Last Olympian
Rick Riordan
Percy Jackson and the Olympians (5)
How to Be a Pirate
How to Train Your Dragon (2)
The Tyrant's Tomb
The Trials of Apollo (4)
Percy Jackson's Greek Gods
Rick Riordan & John Rocco