Wayne W. Dyer (2009). “The Invisible Force: 365 Ways to Apply the Power of Intention to Your Life: Easyread Super Large 20pt Edition”, p.79, ReadHowYouWant.com
Wayne W. Dyer (2009). “Being in Balance: 9 Principles for Creating Habits to Match Your Desires: Easyread Super Large 24pt Edition”, p.131, ReadHowYouWant.com