Melody Beattie (2013). “Melody Beattie 4 Title Bundle: Codependent No More and 3 Other Best Sellers by Melody Beattie: A collection of four Melody Beattie best sellers”, Hazelden Publishing
D.J. MacHale (2012). “Pendragon Books 6-10: The Rivers of Zadaa; The Quillan Games; The Pilgrims of Rayne; Raven Rise; The Soldiers of Halla”, p.1911, Simon and Schuster