Samuel Johnson (2010). “Journey to the Hebrides: A Journey to the Western Islands of Scotland & The Journal of a Tour to the Hebrides”, p.14, Canongate Books
Samuel Johnson (1807). “Dr. Johnson's Table-talk: Containing Aphorisms on Literature, Life, and Manners, with Anecdotes of Distinguished Persons, Selected and Arranged from Mr. Boswell's Life of Johnson”, p.163
Samuel Johnson (1804). “The beauties of Samuel Johnson: maxims and observations. To which are now added, biographical anecdotes of the doctor, his life [&c.].”, p.333