Edgar Allan Poe (2014). “Complete Collection of Edgar Allan Poe - 170+ eBooks (Complete Tales, Poems, Novels, Essays, Miscellaneous, Play)”, p.702, Ageless Reads
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.45, Simon and Schuster