| Author | Titles | | 1.
| Fortes, Manuel Amaral, 1938- | 5 | | 2.
| Fortes, Manuel de Azevedo | 1 | | 3.
| Fortes, Maria Alcina Pires, 1927- | 0 | | 4.
| Fortes, Mário | 1 | | 5.
| Fortes, Meyer, 1906-1982 | 1 | | 6.
| Fortes, Victor, 1943- | 0 | | 7.
| Author is: Fortes, Vítor, 1943- | 32 | | 8.
| Fortes, Vítor, 1943- | 32 | | 9.
| Fortes, Vítor Manuel da Costa, 1943- | 0 | | 10.
| Author is: Fortes, Vítor, 1943- | 32 | | 11.
| Fortescue, John William | 2 | | 12.
| Forteza Hidalgo, Francesc Xavier | 1 |
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