References
- Faivre, Antoine. Theosophy, Imagination, Tradition: Studies in Western Esotericism. New York: SUNY P, 2000.
- Hanegraaff, Wouter. New Age Religion and Western Culture. Leiden: Brill, 1996.
- Versluis, Arthur. Theosophia: Hidden Dimensions of Christianity. Hudson, NY: Lindisfarne P, 1994.