- Author: Matthias Schmidt, Hubert Zapf
- Language: German
- Year: 2021
- Author: Johanna Hartmann, Hubert Zapf
- Language: English
- Year: 2015
- Author: H. Zapf (editor), E. Siegert (editor)
- Language: German
- Year: 1925
- Author: R. H. Zapf (editor), E. Siegert (editor)
- Language: German
- Year: 1931
- Author: Walther Arndt (editor), Helmuth Klingemann (editor), Heinrich Zapf (editor), Erich Siegert (editor)
- Language: German
- Year: 1959
- Author: Stephanie Zapf
- Language: English
- Year: 2015
- Author: Martin Zapf
- Language: English
- Year: 2022
- Author: Martin Zapf
- Language: English
- Year: 2022
- Author: Hubert Zapf (editor)
- Language: English
- Year: 2016
- Author: Hubert Zapf (editor)
- Language: English
- Year: 2016