The Tyrant's Tomb
Rick Riordan
The Trials of Apollo (4)
9 from the Nine Worlds
Magnus Chase and the Gods of Asgard (5)
Hero's Guide to Deadly Dragons
Cressida Cowell
How to Train Your Dragon (6)
The Wrath of Mulgarath
Tony DiTerlizzi & Holly Black
The Spiderwick Chronicles (5)
How to Break a Dragon's Heart
How to Train Your Dragon (8)
The Chalice of the Gods
Percy Jackson and the Olympians (6)