Wisdom of the Enneagram The Complete Guide to Psychological and Spiritual Growth for the Nine Personality Types Riso Don Richard Heftet / 1999 / Engelsk
Keys to the Enneagram How to Unlock the Highest Potential of Every Personality Type Almaas, A. H. Heftet / 2021 / Engelsk
Enneagram of the Soul A 40-Day Spiritual Companion for the 9 Types Vuong, Nhien Heftet / 2025 / Engelsk
