Charlotte Bronte, Emily Bronte, Anne Bronte (2009). “The Bronte Sisters: Three Novels: Jane Eyre; Wuthering Heights; and Agnes Grey (Penguin Classics Deluxe Edition)”, p.522, Penguin
Oscar Wilde (1997). “Collected Works of Oscar Wilde: The Plays, the Poems, the Stories and the Essays Including De Profundis”, p.1056, Wordsworth Editions
Esther Hicks, Jerry Hicks (2009). “Ask and It Is Given: Learning to Manifest Your Desires: Easyread Super Large 20pt Edition”, p.136, ReadHowYouWant.com