"Iconic Fashion Designer von Furstenberg Says Women Never Cease to Impress and Amaze Her" by Laura Zaccaro and Suzan Clarke, abcnews.go.com. February 10, 2010.
Thomas Jefferson, H. A. Washington (2011). “The Writings of Thomas Jefferson: Being His Autobiography, Correspondence, Reports, Messages, Addresses, and Other Writings, Official and Private”, p.593, Cambridge University Press
"French Music: From the Death of Berlioz to the Death of Fauré". Book by Martin Cooper (p. 136), 1951; later quoted in "Debussy and Wagner", book by Robin Holloway (p. 207), 1979.