Serith, Ceisiwr. Deep Ancestors: Practicing the Religion of the Proto-Indo-Europeans. Tucson, AZ: ADF Pub., 2009. Print.

Jones, Prudence, and Nigel Pennick. A History of Pagan Europe. London: Routledge, 1997. Print.

Clifton, Chas. Her Hidden Children: The Rise of Wicca and Paganism in America. Lanham, MD: AltaMira, 2006. Print.