Sheffield, J. R., & Diejomaoh, V. P. (1972). Non-formal education in African development. African-American Institute.
Čikaški stil citiranja (17. izdanje)Sheffield, James R., i Victor P. Diejomaoh. Non-formal Education in African Development. New York: African-American Institute, 1972.
MLA način citiranja (8. izdanje)Sheffield, James R., i Victor P. Diejomaoh. Non-formal Education in African Development. African-American Institute, 1972.
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