Enneagram, Enneagram: A Modern Myth, Gurdjieff and the Enigmatic Enneagram, Skeptic's Dictionary: enneagram, Tell Me Who I Am, O Enneagram, The Enneagram Theory of Personality, The Enneagram: Psychic Babble
NAW Aware: School or Scam?
Critical look at the Kuziak Fourth Way group called 'The New American Wing'. By ex-members.
Religion and Cults
A Christian perspective.