| Author | Titles | | 1.
| Ratnavibhushana, Anura | 1 | | 2.
| Ratner, Joseph | 1 | | 3.
| Ratner, Sidney | 1 | | 4.
| Rato, David Luciano, 1976- | 1 | | 5.
| Rato, Duarte | 1 | | 6.
| Rato, Fausto Moreira | 4 | | 7.
| Rato, João M. | 3 | | 8.
| Rato, João Pedro | 1 | | 9.
| Rato, José | 1 | | 10.
| Rato, José Moreira, 1860-1937 | 2 |
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