William Wynn Westcott - Numbers Their Occult Power and Mystic Virtues
William Wynn Westcott - An Introduction To The Study Of The Kabalah
Joseph John William - VooDoos And Obeahs Phases of West India Witchcraft
Stephen Mitchell - Learning Magic in the Sagas
Correllian Times Emagazine - Issue 11 August 2007
Arthur Hippler - Some Observations On Witchcraft The Case Of The Aivilik Eskimos