The Battle of the Labyrinth
Rick Riordan
Percy Jackson and the Olymipans (4)
The Last Olympian
Percy Jackson and the Olymipans (5)
The Lost Hero
The Heroes of Olympus (1)
The Sea of Monsters
Percy Jackson and the Olymipans (2)
The Son of Neptune
The Heroes of Olympus (2)
The Titan's Curse
Percy Jackson and the Olymipans (3)