| Author | Titles | | 1.
| Willem-Alexander, Príncipe da Holanda, 1967- | 1 | | 2.
| Willems | 1 | | 3.
| Willems, Alphonse | 1 | | 4.
| Willems, Edgar | 1 | | 5.
| Willems, Paul | 1 | | 6.
| Willems, Roger | 7 | | 7.
| Willems, Roger, 1969- | 6 | | 8.
| Willemse, David | 3 | | 9.
| Willemsen, August | 3 | | 10.
| Willemsen, Merel | 2 |
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