| Author | Titles | | 1.
| Roiter, Fulvio, 1926-2016 | 9 | | 2.
| Roiter, Márcio | 1 | | 3.
| Roitman, Vera | 2 | | 4.
| Roiz, A. | 1 | | 5.
| Roiz Soares, Pero | 1 | | 6.
| Rojals, Marta | 1 | | 7.
| Rojas Aravena, Francisco | 1 | | 8.
| Rojas, Clare, 1976- | 1 | | 9.
| Rojas Fariña, Francisco | 3 | | 10.
| Rojas, Fernando de, 1465-1541 | 3 |
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