Jack Canfield, Mark Victor Hansen (2012). “Chicken Soup for the Soul in the Classroom Middle School Edition: Grades 6–8: Lesson Plans and Students' Favorite Stories for Reading Comprehension, Writing Skills, Critical Thinking, Character Building”, p.433, Simon and Schuster
Jack Canfield, Kent Healy (2010). “The Success Principles for Teens: How to Get From Where You Are to Where You Want to Be”, p.67, Health Communications, Inc.