The Mark of Athena
Rick Riordan
Heroes of Olympus (3)
Lao-tzu's Taoteching
Tzu, Lao, Pine, Red
The Throne of Fire
The Kane Chronicles (2)
The Last Olympian
Percy Jackson and the Olympians (5)
Percy Jackson's Greek Gods
Rick Riordan & John Rocco
Percy Jackson's Companion Books (3)
The Dark Prophecy
The Trials of Apollo (2)