Information presented here was gleaned from World Eras Encyclopaedia, Volume 10, edited by Pierre-Damien Mvuyekure (New York: Thomson-Gale, 2003), in particular pp. 275–314.
Baldick, J (1997) Black God: The Afroasiatic Roots of the Jewish, Christian, and Muslim Religions. New York: Syracuse University Press.
Doumbia, A. & Doumbia, N (2004) The Way of the Elders: West African Spirituality & Tradition. Saint Paul, MN: Llewellyn Publications.
Ehret, Christopher, An African Classical Age: Eastern and Southern Africa in World History, 1000 B.C. to A.D. 400, page 159, University of Virginia Press, ISBN0-8139-2057-4
Karade, B (1994) The Handbook of Yoruba Religious Concepts. York Beach, MA: Samuel Weiser Inc.