- Author: Johannes C. D. Zahn
- Language: German
- Year: 1976
Wirkung der Deutschen Sozialversicherung: Mit Nachtrag Die Sozialversicherung und der jetzige Krieg
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- Author: Friedrich Zahn
- Language: German
- Year: 1916
- Author: Stephan M. Freys (editor), Esther Pogatzki-Zahn (editor)
- Language: German
- Year: 2020
- Author: Zahn Friedrich
- Language: German
- Year: 1919
- Author: Johannes C. D. Zahn, Ekkard Eberding, Dietmar Ehrlich
- Language: German
- Year: 1986
- Author: Adolf von Harnack (editor), Agnes von Zahn-Harnack (editor), Axel von Harnack (editor)
- Language: German
- Year: 1951
- Author: Dietmar Ehrlich, Gregor Haas, Johannes C.D. Zahn
- Language: German
- Year: 2009
- Author: Johannes C. D. Zahn (editor)
- Language: German
- Year: 1937
- Author: Bernard Ryan, Rebecca Zahn (editors)
- Language: English
- Year: 2023