| Author | Titles | | 1.
| Sienkiewicz, Henryk, 1846-1916 | 4 | | 2.
| Sienkiewicz-Nowacka, Ika | 1 | | 3.
| Siepmann, Helmut | 2 | | 4.
| Sier, André, 1977- | 3 | | 5.
| Sieradzka, Anna | 2 | | 6.
| Sierman, Harry N. | 1 | | 7.
| Sierra, Alexis de la, 1954- | 1 | | 8.
| Sierra, Alfonso de | 1 | | 9.
| Sierra Fernández, Lorenzo Alonso de la | 1 | | 10.
| Sierra, Francisco, 1977- | 1 |
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