- Author: Julien Freund Consuelo Angiò (editor)
- Language: Italian
- Year: 2001
- Author: Stephan Freund Matthias Hardt Petra Weigel (Hrsg.)
- Language: German
- Year: 2007
- Author: Alexander Freund
- Language: English
- Year: 2021
- Author: Peter E. S. Freund
- Language: English
- Year: 1982
- Author: Julien Freund Mary Ilford (transl.)
- Language: English
- Year: 1968
- Author: Julien Freund
- Language: Turkish
- Year: 1997
- Author: Jakob Freund
- Language: Spanish
- Year: 2014