Charlotte Bronte, Emily Bronte, Anne Bronte (2009). “The Bronte Sisters: Three Novels: Jane Eyre; Wuthering Heights; and Agnes Grey (Penguin Classics Deluxe Edition)”, p.264, Penguin
Samuel Rutherford (1824). “Joshua redivivus: or, three hundred and fifty two religious letters ... To which is added, the Author's testimony to the covenanted work of reformation, between 1638 and 1649 ... As also, a large preface and postscript ... by the Rev. Mr. McWard. The tenth edition”, p.138