Oscar Wilde (1997). “Collected Works of Oscar Wilde: The Plays, the Poems, the Stories and the Essays Including De Profundis”, p.1026, Wordsworth Editions
"Critic Kenneth Tynan Has Mellowed But Is Still England's Stingingest Gadfly" by Godfrey Smith, The New York Times, archive.nytimes.com. January 09, 1966.