William Shakespeare, Edmond Malone, James Boswell, Samuel Johnson, Mr. Theobald (Lewis) (1821). “The Plays and Poems of William Shakspeare: With the Corrections and Illustrations of Various Commentators”, p.20
Leo Tolstoy (2012). “The Anna Karenina Companion: Includes Complete Text, Study Guide, Biography, and Character Index: BookCaps Study Guide”, p.513, BookCaps Study Guides
Oscar Wilde (2013). “The Picture of Dorian Gray: The Story of a Fashionable Young Man Who Sells His Soul for Eternal Youth and Beauty (Beloved Books Edition)”, p.37, Lulu Press, Inc