| Author | Titles | | 1.
| Parkinson, Stephen | 2 | | 2.
| Parkinson, Sydney | 2 | | 3.
| Parks, Ann M. | 1 | | 4.
| Parks, Gordon, 1912-2006 | 2 | | 5.
| Parks, Janet | 1 | | 6.
| Parkyn, Neil | 1 | | 7.
| Parlagreco, Carlo | 1 | | 8.
| Parlak, Emre | 1 | | 9.
| Parlama, Liana | 1 | | 10.
| Parlamento português | 0 | | 11.
| Author is: Portugal. Assembleia da República | 8 |
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