- AudiolivroGurdjieffClaudio Naranjo, M.D.
- AudiolivroPowers Of PerceptionCharles Tart, Ph.D.
- AudiolivroSpiritual Beings In A Material WorldCharles Tart, Ph.D.
- AudiolivroDiving Into The Pool Of ConsciousnessArthur Hastings, Ph.D.
- AudiolivroScientific Support for the Spiritual Dimension of LifeCharles Tart, Ph.D.