Jane Nelsen, Ed.D. (2011). “Positive Discipline: The Classic Guide to Helping Children Develop Self-Discipline, Responsibility, Cooperation, and Problem-Solving Skills”, p.303, Ballantine Books
"Angelina Jolie Talks MALEFICENT, Getting into Character, Wearing the Costume and Horns, Directing UNBROKEN, Balacing Work and Family, and More". Interview with Christina Radish, collider.com. May 21, 2014.