| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Think For Myself | 978-1-7751638-0-0 (1-7751638-0-6) | 2017 |
| Think For Myself At School: Holistic Thinking Kids | 978-1-7751638-2-4 (1-7751638-2-2) | 2018 |
K. H. · Karsten Hommel · Kersten Hänel · Kirstin Hanley · Krystyna Hammele