| Author | Titles | | 1.
| Sperini, Loredana, 1970- | 1 | | 2.
| Sperka, Martin | 1 | | 3.
| Sperlich, Hans G. | 1 | | 4.
| Sperling, Christine M. | 1 | | 5.
| Sperling, Harry G. | 1 | | 6.
| Sperlinger, Mike | 2 | | 7.
| Spero, Nancy, 1926-2009 | 12 | | 8.
| Spero, Simon | 1 | | 9.
| Speroni, Franco | 2 | | 10.
| Sperr, Hans Joachim | 1 |
|
|
