"Elizabeth Gilbert, ‘Eat, Pray, Love’ Author, On What It Takes To Get Inspired". Interview with Chantal Pierrat, www.huffingtonpost.com. August 11, 2013.
Robert Jordan, Harriet McDougal, Alan Romanczuk, Maria Simons (2015). “The Wheel of Time Companion: The People, Places and History of the Bestselling Series”, p.420, Macmillan
Charles Brock, Charles Sheeler, National Gallery of Art (U.S.), Art Institute of Chicago, M.H. De Young Memorial Museum (2006). “Charles Sheeler: across media”, University of California Press
Letter to Catherine, Lady Hamilton, April 1781; cited from "The Life and Letters of William Beckford of Fonthill" by Lewis Melville, London: William Heinemann, (p. 92), 1910.