Bishop, Peter & Michael Darton (editors). The Encyclopedia of World Faiths: An Illustrated Survey of the World's Living Faiths. New York: Facts on File Publications (1987); pg. 85. [2]
Spence, Hartzell. The Story of America's Religions; New York: Holt, Rinehart and Winston (1960) [1st printing 1957]; pg. 117. [3]
"Religionswissenschaftlicher Medien- und Informationsdienst e.V. " [REMID: Religious Studies Media and Information Service, Marburg, Germany]; web page: "Informationen und Standpunkte " (viewed 2 August 1999). [4]
