Mercury Retrograde: Your Survival Guide to Astrology’s Most Precarious Time of the Year!, Warner Books, 2002

Llewellyn Astrological Calendars for 2008

Llewellyn Astrological Calendar for 2009

Magical and Ritual Use of Aphrodisiacs, Destiny, 1985

Magical and Ritual Use of Perfumes (with Iona Miller), Destiny, 1990

Magical and Ritual Use of Herbs, Destiny, 1983

Making Magic with Gaia: Practices to Heal Ourselves and Our Planet, Red Wheel/Weiser, 2001

Kundalini Tales, Adventures Unlimited Press, 1998

John Dee and the Empire of Angels: Enochian Magick and the Occult Roots of the Modern World, Inner Traditions, 2018

Initiation in the Aeon of the Child: The Inward Journey, Ibis Press, 2009