Horace (1928). “Horace on the Art of Poetry: Latin Text, English Prose Translation, Introduction and Notes, Together with Ben Jonson's English Verse Rendering”
Samuel Johnson (2010). “Journey to the Hebrides: A Journey to the Western Islands of Scotland & The Journal of a Tour to the Hebrides”, p.183, Canongate Books
James Boswell, Samuel Johnson (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.258