Oscar Wilde (1997). “Collected Works of Oscar Wilde: The Plays, the Poems, the Stories and the Essays Including De Profundis”, p.476, Wordsworth Editions
"La Duchesse de Langeais". Essay by Honore de Balzac (1834), published in "Oeuvres completes de H. de Balzac" ("Complete works of Balzac") published by A. Houssiaux (Part II, pp. 111-235), translated by Ellen Marriage, 1855.