| Author | Titles | | 1.
| Spiluttini, Margherita | 1 | | 2.
| Spina, Luigi, 1946- | 1 | | 3.
| Spina, Segismundo, 1921- | 8 | | 4.
| Spinatsch, Jules, 1964- | 2 | | 5.
| Spinazzi, Angelo | 1 | | 6.
| Spindler, Lisa | 1 | | 7.
| Spineli, Nicola | 1 | | 8.
| Spinelli, Carlo | 1 | | 9.
| Spinelli, Claudia, 1964- | 2 | | 10.
| Spinelli, Fiorella, 1949- | 1 |
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