- Author: Franz Oppenheimer
- Language: German
- Year: 1909
- Author: Hans Oppenheimer
- Language: German
- Year: 1925
- Author: Mark Oppenheimer
- Language: English
- Year: 2021
- Author: James J. Emery Michael F Oppenheimer Norman A Graham Richard L Kauffman
- Language: English
- Year: 2019
- Author: Danny Oppenheimer Grady Klein
- Language: English
- Year: 2017
El Estado
epub
- Author: Franz Oppenheimer
- Language: Spanish
- Author: A.R. Oppenheimer
- Language: English
- Year: 2018
- Author: Paul Oppenheimer
- Language: English
