^Lewis, James R (2004). The Oxford Handbook of New Religious Movements. Oxford University Press. p. 13. ISBN0195149866
^Hanegraaff, Wouter J (1996). New Age Religion and Western Culture: Esotericism in the Mirror of Secular Thought. Brill Academic Publishers. p. 84. ISBN9004106960
^Adler, Margot (1979, revised and updated 1986, 1996, 2006). Drawing Down the Moon: Witches, Druids, Goddess Worshippers and Other Pagans in America (1986 ed.). New York, NY: Penguin Books. pp. 3–4. ISBN0143038192