- Author: Dieter Nohlen (editor)
- Language: Spanish, Castilian
- Year: 2019
- Author: Bernhard Vogel, Dieter Nohlen, Rainer - Olaf Schultze
- Language: German
- Year: 1971
- Author: Dieter Nohlen
- Language: Spanish
- Year: 2007
- Author: Dieter Nohlen
- Language: Spanish
- Year: 2011
- Author: Dieter Nohlen
- Language: Spanish
- Year: 1998
- Author: Dieter Nohlen
- Language: Spanish
- Year: 2010
- Author: Dieter Nohlen Richard Ortiz Ortiz
- Language: Spanish
- Year: 2010
- Author: Alberto van Klaveren (auth.) Dieter Nohlen Mario Fernández Alberto van Klaveren (eds.)
- Language: German
- Year: 1991