| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| 20代で鍛えておきたい「思考」の基礎体力 (シンク!別冊 No. 2) 20dai/ | 978-4-492-83031-4 (4-492-83031-6) | 2008 |
| Think!別冊NO.1 一流の思考力 Think!bessatsuNO.1 ichiryuunoshikouryoku | 978-4-492-83029-1 (4-492-83029-4) | 2008 |
Tanja Esch · Thomas Eck · Thomas Eich · Thomas Esch · Thomas Esche