Wayne W. Dyer (2009). “The Invisible Force: 365 Ways to Apply the Power of Intention to Your Life: Easyread Super Large 20pt Edition”, p.120, ReadHowYouWant.com
Wayne W. Dyer (2009). “The Invisible Force: 365 Ways to Apply the Power of Intention to Your Life: Easyread Large Bold Edition”, p.17, ReadHowYouWant.com