- Original title: The Story of Sander, Muri, the Eensy Mum, and the Invisible Aksel
- Illustrator: Piret Raud
- Language: Korean
- Better Books
- 2019, 131 pp
- ISBN: 9788984889521
- fiction, storybook
- Age: 8+
Translated from French
엄마가 작아졌어요
