| Visual C 2010 | Sander Gerz | Pearson Education |
| Visual C# 2008 de basis | Sander Gerz | Pearson Benelux B.V. |
| Windows Server 2008 | Sander Gerz | Mainpress B.V. |
| Visual C 2005 - De Basis + Cd-Rom | Sander Gerz | Pearson Education |
| jQuery | Sander Gerz | Mainpress B.V. |
| Visual C 2012 | Sander Gerz | Mainpress B.V. |
