P. J. O'Rourke (2007). “Republican Party Reptile: The Confessions, Adventures, Essays and (Other) Outrages of P.J. O'Rourke”, p.146, Grove/Atlantic, Inc.
James Boswell, Samuel Johnson, Edmond Malone (1824). “The life of Samuel Johnson, LL. D., comprehending an account of his studies, and numerous works, in chronological order: a series of his epistolary correspondence and conversations with many eminent persons; and various original pieces of his composition, never before published; the whole exhibiting a view of literature and literary men in Great Britain, for near half a century during which he flourished”, p.373