| Author | Titles | | 1.
| Zuppiroli, Libero | 1 | | 2.
| Zuppone-Strani, G. | 1 | | 3.
| Zúquete, Afonso | 4 | | 4.
| Zúquete, Afonso Eduardo Martins | 2 | | 5.
| Zúquete, Eduardo | 1 | | 6.
| Zúquete, José Luís Afonso Leitão, 1934-1991 | 1 | | 7.
| Zúquete, Luis | 1 | | 8.
| Zúquete, Luísa | 34 | | 9.
| Zur Capellen, Jürg Meyer | 3 | | 10.
| Zur, Nirit | 4 |
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