| Author | Titles | 1.
| Firenze, Mirella Roccasalva | 1 | 2.
| Firenzuola, Agnolo | 1 | 3.
| Firestone, O. J. | 2 | 4.
| Firfova, Neda | 1 | 5.
| Firmery, Joseph Léon | 1 | 6.
| Firmin, Stanley | 1 | 7.
| Firmin-Didot, Ambroise, 1790-1876 | 2 | 8.
| Firmino, Almeida, 1934-1977 | 1 | 9.
| Firmino, João | 2 | 10.
| Firmino, Jorge, 1973- | 1 |
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