CHOPRA, Deepak. Perfect Health: The Complete Mind/Body Guide. New York. USA: Harmony books, 1990. Dostupné online. ISBN0-517-57195-1. (anglicky)
SOVATSKY, Stuart. Words from the Soul: Time, East/West Spirituality, and Psychotherapeutic Narrative. New York. USA: State University of New York Press, 1998. Dostupné online. (anglicky)