- Original title: A Serious Thought
- Illustrator: Jonas Taul
- Translator: Indrek Koff
- Language: French
- La Joie de lire
- 2017, 65 pp
- ISBN: 9782889083930
- fiction, picturebook
- Age: 6+
Pensées nocturnes
For more information or copyrights, please contact ulla.saar@elk.ee