| Author | Titles | | 1.
| Rota, Nino, 1911-1979 | 1 | | 2.
| Rotary Club de Braga | 1 | | 3.
| Rotary Club de Lisboa | 1 | | 4.
| Rotberg, Robert , 1935- | 0 | | 5.
| Author is: Rotberg, Robert I., 1935- | 2 | | 6.
| Rotberg, Robert I., 1935- | 2 | | 7.
| Rotberg, Robert Irwin, 1935- | 0 | | 8.
| Author is: Rotberg, Robert I., 1935- | 2 | | 9.
| Rotella, Domenico, 1918-2006 | 0 | | 10.
| Author is: Rotella, Mimmo, 1918-2006 | 3 | | 11.
| Rotella, Mimmo, 1918-2006 | 3 | | 12.
| Rotelli, Ettore | 1 | | 13.
| Rotelli, Marco Nereo, 1955- | 1 |
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