ネオ神智学
↑ Robert S. Ellwood, Jr., Alternative Altars: Unconventional and Eastern Spirituality in America, University of Chicago Press, 1979 ISBN 0-226-20618-1
↑ Daryl S. Paulson, "The Near-Death Experience: An Integration of Cultural, Spiritual, and Physical Perspectives", Journal of Near-Death Studies, Springer, Netherlands, ISSN 0891-4494 (Print) 1573-3661 (Online) Issue Volume 18, Number 1 / September, 1999
↑ Neville Drury. "Why Does Aleister Crowley Still Matter?" Richard Metzger, ed. Book of Lies: The Disinformation Guide to Magick and the Occult. Disinformation Books, 2003.