udika Illes is an independent scholar, educator, and author of several books of folklore, folkways, and mythology. Judika is a graduate of Rutgers University and has a certification in therapeutic aromatherapy from the Australasian College of Herbal Studies. Her books include Encyclopedia of 5,000 Spells, Encyclopedia of Spirits, The Element Encyclopedia of Witchcraft, The Weiser Field Guide to Witches, and The Weiser Field Guide to the Paranormal (published under the name Judith Joyce).