| Author | Titles | | 1.
| Pennanen, Marja | 1 | | 2.
| Pennati, Camillo | 1 | | 3.
| Penne, R. Leo | 1 | | 4.
| Pennec, Hervé | 1 | | 5.
| Pennell, Joseph, 1857-1926 | 1 | | 6.
| Penney, Clara Louisa | 2 | | 7.
| Penney, David W. | 2 | | 8.
| Penning-Rowsell, Edmund | 1 | | 9.
| Pennisi, Agostino | 1 | | 10.
| Pennisi, Giuseppe | 1 |
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