- Author: Marcus Koch, transcript: Open Library 2019 (Politik)
- Language: German
- Year: 2019
- Author: Simon Hofmann, Swiss National Science Foundation (SNSF)
- Language: German
- Year: 2016
- Author: Ingrid Hentschel
- Language: German
- Year: 2016
- Author: Richard Butler (editor), Wantanee Suntikul (editor)
- Language: English
- Year: 2018
- Author: Pierre Schlag
- Language: English
- Year: 2020
- Author: Pedro Calmon
- Language: Portuguese
- Year: 1937
Karl Marx
epub
- Author: Isaiah Berlin Henry Hardy (editor)
- Language: Italian
- Year: 2021
- Author: Nikolaj Lübecker
- Language: English
- Year: 2022