| Verfasser | Häufigkeit |
| Lawi, Yusufu Qwaray |
2 |
| Mtaku, Christopher Yusufu |
2 |
| Olatunji, Yusufu |
2 |
| Usman, Yusufu Bala |
2 |
| Brennan, James R. |
1 |
| Burton, Andrew |
1 |
| Dadem, Yusufu Yilzum |
1 |
| Hamza, Auwalu Yusufu |
1 |
| Jinkiri, Yusufu |
1 |
| Kyeyune, Yusufu |
1 |
| Lettau, Meike |
1 |
| Malende, Yusufu H. M. B. 1955- |
1 |
| Otchere, Eric Debrah |
1 |
| Sokoto Seminar |
1 |
| Turaki, Yusufu |
1 |
| Usman, Yusufu B. |
1 |
| Usman, Yusufu Bala 1945- |
1 |
| Yusufu, Sa'adatu E. |
1 |