Etymology of Wicca published in Canada. It discussed a Gardnerian-based tradition. In ensuing years, many other authors would publish books containing "Wicca" in their titles which advocated solitary practice of Pagan Witchcraft; best known were Scott Cunningham's "Wicca: A Guide for the Solitary Practitioner" (1988) and Silver RavenWolf's "Teen Witch: Wicca for a New Generation" (1998), but other examples included Gerina Dunwich's "The Wicca Garden" (1996), D. J. Conway's "Wicca: The Complete Craft" (2001), Raymond Buckland's "Wicca for Life" (2004) and "Wicca for One" (2004), Arin Murphy-Hiscock's "Solitary Wicca for Life" (2005) and Ann-Marie Gallagher's "The Wicca Bible" (2005). It was also adopted
Wicca oral teachings passed along to their initiates. There are many variations on the core structure, and the religion grows and evolves over time. It is divided into a number of diverse lineages, sects and denominations, referred to as "traditions", each with its own organisational structure and level of centralisation. Due to its decentralized nature, there is some disagreement over what actually constitutes Wicca. Some traditions, collectively referred to as British Traditional Wicca, strictly follow the initiatory lineage of Gardner and consider the term "Wicca" to apply only to similar traditions, but not to newer, eclectic traditions. Wicca is typically duotheistic,