| Author | Titles | | 1.
| Aguirre, Peio | 9 | | 2.
| Aguirre, Ramón | 1 | | 3.
| Aguirre y Ortiz de Zárate, Jesús | 1 | | 4.
| Aguirre y Respaldiza, Andrés | 2 | | 5.
| Aguirregoitia Arechavaleta, Antón | 1 | | 6.
| Agulhon, Maurice, 1926-2014 | 5 | | 7.
| Agulló, Francesc | 1 | | 8.
| Agullo y Cobo, Mercedes | 1 | | 9.
| Agulu, Chika Okeke-, 1966- | 0 | | 10.
| Author is: Okeke-Agulu, Chika 1966- | 1 | | 11.
| Agúndez García, José Antonio | 3 |
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