Edgar Allan Poe (1947). “The Pit and the Pendulum. - Wien: Leinmüller 1947. 32 S. kl. 8° (Englische Lesehefte f. Schule u. Haus. 3.)”, p.3, Hayes Barton Press
Edgar Allan Poe (2014). “Complete Collection of Edgar Allan Poe - 170+ eBooks (Complete Tales, Poems, Novels, Essays, Miscellaneous, Play)”, p.111, Ageless Reads
Edgar Allan Poe, Thomas Ollive Mabbott, Eleanor D. Kewer, Maureen Cobb Mabbott (2000). “Tales and Sketches: 1831-1842”, p.229, University of Illinois Press
Edgar Allan Poe (2014). “Complete Collection of Edgar Allan Poe - 170+ eBooks (Complete Tales, Poems, Novels, Essays, Miscellaneous, Play)”, p.1305, Ageless Reads