Aus der wirklichen Welt: Gurdjieffs Gespräche mit seinen Schülern ...
Georges Ivanovich Gurdjieff & Gurdjieff
A Cup of Trembling
Dave Hunt
Focus: The Hidden Driver of Excellence
Daniel Goleman
Secrets of Daniel: Wisdom and Dreams of a Jewish Prince in Exile
Jacques Doukhan
Gurdjieff (Oxford Studies in Western Esotericism)
Joseph Azize
Cunningham's Encyclopedia of Magical Herbs
Scott Cunningham