| Autor | Títulos | 1.
| Roberts-Jones, Philippe, 1924- | 29 | 2.
| Robertson, Alasdair | 1 | 3.
| Robertson, Alec | 1 | 4.
| Robertson, Alexander | 1 | 5.
| Robertson, Anne S. | 1 | 6.
| Robertson, Bruce | 1 | 7.
| Robertson, Bryan | 9 | 8.
| Robertson, C. M. | 1 | 9.
| Robertson, Carla | 1 | 10.
| Robertson, Charles | 1 |
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