"Origin Interview: Diggin' Deep with Bonnie Raitt, Legend, Activist, Musician". Interview with Maranda Pleasant, www.marandapleasantmedia.com. April 27, 2016.
William Penn (1857). “Primitive Christianity revived in the faith and practice of the people called Quakers: Written in testimony to the present dispensation of God through them to the world that prejudices may be removed, the simple informed, the well-inclined encouraged, and the truth, and its innocent friends rightly represented”