| Verfasser | Häufigkeit |
| Ahrens, Klaus |
3 |
| Pittner, Hanno |
3 |
| Pittner, Andreas |
2 |
| Bachmann, Gerhild 1961- |
1 |
| Badanahatti, Giri |
1 |
| Binford, Aaron |
1 |
| Crawford, Charlie |
1 |
| Faber-Castell, Anton Wolfgang von 1941-2016 |
1 |
| Fitzgerald, Daniel |
1 |
| Frantz-Pittner, Andrea |
1 |
| Grabner, Silvia |
1 |
| Gucer, Vasfi |
1 |
| Leggette, Wesley |
1 |
| Madiraju, Mrudula |
1 |
| Pittner, Antje |
1 |
| Pittner, Daniel |
1 |
| Safari, an O'Reilly Media Company |
1 |
| Van Speybroek, Joeri |
1 |