Charles Dickens (2015). “Dickens Ultimate Christmas Collection: The Greatest Stories & Novels for Christmas Time: A Christmas Carol, Doctor Marigold, Oliver Twist, Tom Tiddler's Ground, The Holly-Tree and more (Illustrated): The Best Loved Christmas Classics in One Volume”, p.562, e-artnow
Frances Wright (1829). “Course of popular lectures as delivered by Frances Wright: with three addresses on various public occasions, and a reply to the charges against the French reformers of 1789. Second edition”, p.55