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2. Ade Ajayi, J.F. Christian Missions in Nigeria, 1841–1891: The Making of a New élite. Evanston: Northwestern University Press, c.1965, 90–165.
3. African Education Committee. Education in Africa; A Study of West, South, and Equatorial Africa by the African Education Commission, Under the Auspices of the Phelps-Stokes Fund and Foreign Mission Societies of North America and Europe; Report Prepared by Thomas Jesse Jones, Chairman of the Commission. New York: Phelps-Stokes Fund, 1922.
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5. Anderson, Allan H. African Reformation: African Initiated Christianity in the 20th Century. Trenton, NJ: Africa World Press, 2001.