- Author: Carl Schmitt (editor), George Schwab (editor), Tracy B. Strong (editor)
- Language: English
- Year: 2010
- Author: Carl Schmitt (editor), Armin Mohler (editor), Irmgard Huhn (editor), Piet Thommissen (editor)
- Language: German
- Year: 1995
- Author: Carl Schmitt (editor)
- Language: English
- Year: 2010