Sheffield, J. R., & Diejomaoh, V. P. (1972). Non-formal education in African development. African-American Institute.
Chicago Style (17. basım) AtıfSheffield, James R., ve Victor P. Diejomaoh. Non-formal Education in African Development. New York: African-American Institute, 1972.
MLA (8th ed.) AtıfSheffield, James R., ve Victor P. Diejomaoh. Non-formal Education in African Development. African-American Institute, 1972.
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