Bruce H. Lipton (2010). “The Biology of Belief: Unleashing the Power of Consciousness, Matter and Miracles: Easyread Large Edition”, p.11, ReadHowYouWant.com
Bruce H. Lipton (2015). “The Biology of Belief 10th Anniversary Edition: Unleashing the Power of Consciousness, Matter & Miracles”, p.172, Hay House, Inc