- Author: Sonja Gehring Sanni Heinzmann
- Language: Finnish
- Year: 2020
Suomen Mestari 4
pdf
- Author: Sonja Gehring Sanni Heinzmann Sari Päivärinne Taija Udd
- Language: Finnish
- Year: 2016
Suomen Mestari 2
djvu
- Author: Sonja Gehring Sanni Heinzmann
- Language: Finnish
- Year: 2012
Suomen Mestari 3
djvu
- Author: Sonja Gehring, Sanni Heinzmann
- Language: Finnish
- Year: 2013