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
"Meditations of a Parish Priest" by Philibert Joseph Roux, translated by Isabel Florence Hapgood, New York: Thomas Y. Crowell & Co., Part 9, LIV, 1886.