| Author | Titles | | 1.
| Portela, Artur, 1937- | 27 | | 2.
| Portela, Artur Guerra Jardim, 1937- | 0 | | 3.
| Author is: Portela, Artur, 1937- | 27 | | 4.
| Portela, Artur Jardim, 1901-1959 | 0 | | 5.
| Author is: Portela, Artur, 1901-1959 | 26 | | 6.
| Portela, Bruno, 1966- | 7 | | 7.
| Portela Calvar, L. 1958- | 1 | | 8.
| Portela, Carmo | 1 | | 9.
| Portela, Celestino | 1 | | 10.
| Portela, César, 1937- | 2 | | 11.
| Portela, Cristina | 1 | | 12.
| Portela, Fernanda | 1 |
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