Mark Bauerlein (2008). “The Dumbest Generation: How the Digital Age Stupefies Young Americans and Jeopardizes Our Future(Or, Don 't Trust Anyone Under 30)”, p.9, Penguin
Charlotte Bronte, Emily Bronte, Anne Bronte (2009). “The Bronte Sisters: Three Novels: Jane Eyre; Wuthering Heights; and Agnes Grey (Penguin Classics Deluxe Edition)”, p.253, Penguin
Jeremy Taylor, Charles Page Eden, Reginald Heber, Alexander Taylor (1848). “The Whole Works of the Right Rev. Jeremy Taylor, Lord Bishop of Down, Connor and Dromore: Sermons”, p.216