APA (7th ed.) Zitazioa
Sheffield, J. R., & Diejomaoh, V. P. (1972). Non-formal education in African development. African-American Institute.
Chicago Style (17th ed.) Zitazioa
Sheffield, James R., eta Victor P. Diejomaoh. Non-formal Education in African Development. New York: African-American Institute, 1972.
MLA (9th ed.) Zitazioa
Sheffield, James R., eta Victor P. Diejomaoh. Non-formal Education in African Development. African-American Institute, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.