The Hidden Oracle
Rick Riordan
The Trials of Apollo (1)
The Aeneid
Vergil & Virgil
The Conquest of Happiness
Russell, Bertrand
The Chalice of the Gods
Percy Jackson and the Olympians (6)
Percy Jackson's Greek Gods
Rick Riordan & John Rocco
Percy Jackson's Companion Books (3)
The Dark Prophecy
The Trials of Apollo (2)