Baron, Renee and Elizabeth Wagele. The Enneagram Made Easy. San Francisco: HarperSanFrancisco, 1994. Paperback, 176 pages.
Good material presented in a quick and easy way to grasp. Great cartoons that effectively illustrate differences in the types. Light on narrative and big on bulleted and numbered lists. Baron, a therapist, is a Point Two and Wagele, an illustrator and writer, is a Point Five. Book has interesting chart correlating the Enneagram and the MBTI. Also, see Wagele, below.