| Author | Popularity |
| Lattke, Susanne |
9 |
| Nuissl, Ekkehard |
3 |
| German Institute for Adult Education |
2 |
| Bechtel, Mark |
1 |
| Egetenmeyer, Regina |
1 |
| German Institute for Adult Education. Leibniz Centre for Lifelong Learning |
1 |
| Institute for International Cooperation of the German Adult Education Association |
1 |
| Jütte, Wolfgang |
1 |
| Popovic, Katarina |
1 |
| Pätzold, Henning |
1 |
| Weickert, Jesco |
1 |
