Oscar Wilde, Peter Raby (2008). “The Importance of Being Earnest and Other Plays: Lady Windermere's Fan; Salome; A Woman of No Importance; An Ideal Husband; The Importance of Being Earnest”, p.151, Oxford Paperbacks
Oscar Wilde (2013). “The Picture of Dorian Gray: The Story of a Fashionable Young Man Who Sells His Soul for Eternal Youth and Beauty (Beloved Books Edition)”, p.209, Lulu Press, Inc
Oscar Wilde, Peter Raby (2008). “The Importance of Being Earnest and Other Plays: Lady Windermere's Fan; Salome; A Woman of No Importance; An Ideal Husband; The Importance of Being Earnest”, p.259, Oxford Paperbacks
Oscar Wilde, Russell Jackson, Ian Small (2000). “The Complete Works of Oscar Wilde: De profundis, "Epistola : in carcere et vinculis"”, p.152, Oxford University Press on Demand