Lasky, Kathryn The Journey. - New York : Scholastic, 2003. - 242 - Guardians of Ga'hoole . Soren, Gylfie and their new friends arrive at the Great Ga'Hoole tree, only to be tested in ways they didn't imagine, and challenged to become true Ga'hoolian owls. ISBN: 0439405580 Subjects--Topical Terms: Owls-Fiction