Ernest Holmes, Michael Beckwith (2010). “How to Change Your Life: An Inspirational, Life-Changing Classic from the Ernest Holmes Library”, p.2, Health Communications, Inc.
Albert Einstein (2015). “Bite-Size Einstein: Quotations on Just About Everything from the Greatest Mind of the Twentieth Century”, p.32, St. Martin's Press
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.1, DeVorss & Company