Nathaniel Hawthorne (2015). “Complete Novels of Nathaniel Hawthorne (Illustrated Edition): Fanshawe, The Scarlet Letter with its Adaptation, The House of the Seven Gables, The Blithedale Romance, The Marble Faun, The Dolliver Romance, Septimius Felton, Grimshawe's Secret and Biography”, p.846, e-artnow
"Bildung in Early German Romanticism" by Frederick C. Beiser. "Philosophers on Education: New Historical Perspectives". Book edited by Amélie Rorty, p. 294, 1998.
Joseph Conrad (2015). “The Complete Novels of Joseph Conrad - All 20 Works in One Premium Edition: Including Unforgettable Titles like Heart of Darkness, Lord Jim, The Secret Agent, Nostromo, Under Western Eyes and Many More (With Author’s Letters, Memoirs and Critical Essays)”, p.4543, e-artnow