Ernest Holmes (1984). “Living the Science of Mind: The Only Writings by the Founder of SCIENCE OF MIND to Help You Understand His Classic Textbook”, p.31, DeVorss & Company
F. Scott Fitzgerald (2015). “Collected Letters of F. Scott Fitzgerald: From the author of The Great Gatsby, The Side of Paradise, Tender Is the Night, The Beautiful and Damned, The Love of the Last Tycoon, The Curious Case of Benjamin Button and many other notable works”, p.646, e-artnow