| Author | Titles | | 1.
| Speranzoni, Wladimiro | 1 | | 2.
| Sperber, Dan | 1 | | 3.
| Sperber, George Bernard | 1 | | 4.
| Sperber, Lúcia | 1 | | 5.
| Sperini, Loredana, 1970- | 1 | | 6.
| Sperka, Martin | 1 | | 7.
| Sperlich, Hans G. | 1 | | 8.
| Sperling, Christine M. | 1 | | 9.
| Sperling, Harry G. | 1 | | 10.
| Sperlinger, Mike | 2 |
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