Samuel Johnson, James Boswell (1825). “The Table Talk of Dr. Johnson: Comprising Opinions and Anecdotes of Life and Literature, Men, Manners, and Morals”, p.119
James Boswell, Samuel Johnson (1786). “Boswell's Life of Johnson: Including Boswell's Journal of a Tour of the Hebrides, and Johnson's Diary of A Journey Into North Wales”, p.32