John Howard Wilson, Evelyn Waugh: 1924–1966, Fairleigh Dickinson Univ Press, (lire en ligne), 45
The Letters of Rudyard Kipling: 1931–36, University of Iowa Press, (lire en ligne), 23
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Melville Henry Massue Marquis de Ruvigny et Raineval, The Plantagenet Roll of the Blood Royal: Being a Complete Table of All the Descendants Now Living of Edward III, King of England. The Isabel of Essex volume, Genealogical Publishing Company, Incorporated, (ISBN9780806314341, lire en ligne), p. 234
D J Taylor, Bright Young People: The Rise and Fall of a Generation 1918–1940, Random House, (ISBN9781409020639, lire en ligne), p. 27
Marie-Jaqueline Lancaster, Brian Howard: Portrait of a Failure, Timewell Press, (ISBN9781857252118, lire en ligne), p. 122