- Author: Niklas Luhmann
- Language: Polish
- Year: 2009
- Author: Thomas Luhmann Stuart Robson Stephen Kyle and Jan Boehm
- Language: English
- Year: 2019
- Author: Niklas Luhmann
- Language: Spanish
- Year: 1998
- Author: Niklas Luhmann
- Language: Italian
- Year: 1990
- Author: Niklas Luhmann Stefano Magnolo (editor)
- Language: Italian
- Year: 2017
R für Einsteiger
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- Author: Maike Luhmann
- Language: German
- Year: 2020
- Author: C. T. Russell J. G. Luhmann R. J. Strangeway
- Language: English
- Year: 2016
- Author: Niklas Luhmann
- Language: Spanish
- Year: 2017
- Author: Niklas Luhmann, Karl-Eberhard Schorr
- Language: English
- Year: 2000
- Author: Niklas Luhmann
- Language: Spanish
- Year: 2010