- ^ Sow, Alfa I., and Mohamed H. Abdulaziz, "Language and Social Change," Ch. 18 in Ali A. Mazrui (ed.) Africa Since 1935 (UNESCO General History of Africa, Vol. 8). University of California Press, 1993. P. 527.
- ^ 與現時的標準字型Ɓ不同
- Coulmas, Florian, The Blackwell Encyclopedia of Writing Systems, 1996, Blackwell, Oxford
- IIACL, Practical Orthography of African Languages (頁面存檔備份,存於網際網路檔案館), Revised Edition, London: Oxford University Press, 1930
- Sow, Alfa I., and Mohamed H. Abdulaziz, "Language and Social Change," Ch. 18 in Ali A. Mazrui (ed.) Africa Since 1935 (UNESCO General History of Africa, Vol. 8). University of California Press, 1993.