Mark Twain, Susan K. Harris (1994). “Historical Romances: The Prince and the Pauper, A Connecticut Yankee in King Arthur's Court, Personal Recollections of Joan of Arc”, p.115, Library of America
Mark Twain (2014). “Mark Twain on Common Sense: Timeless Advice and Words of Wisdom from America's Most-Revered Humorist”, p.28, Skyhorse Publishing, Inc.
John Milton, James BUCHANAN (Grammarian.) (1773). “The First Six Books of Milton's Paradise Lost, Rendered Into Grammatical Construction ... With Notes ... To which are Prefixed Remarks on Ellipsis and Transposition ... By J. Buchanan”, p.296