- Author: Robert Stern (editor), H. Pötschke (editor), F. Herget (editor)
- Language: German
- Year: 1904
- Author: Robert Stern
- Language: German
- Year: 1911
- Author: Jens Peter Brune (editor), Robert Stern (editor), Micha H. Werner (editor)
- Language: English
- Year: 2017
Leitfaden zur Durchführung von zusammenfassenden kaufmännischen Übungen in Form eines Muster-Kontors
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- Author: Robert Stern
- Language: German
- Year: 1900
- Author: Robert Stern
- Language: German
- Year: 1901
- Author: Robert Stern
- Language: German
- Year: 1902
- Author: Robert Stern
- Language: German
- Year: 1910
- Author: Robert Stern
- Language: English
- Year: 1999