- Author: Esperança Piquer Ferrer
- Language: Spanish, Castilian
- Year: 2005
- Author: Rudolf Šrámek
- Language: German, English, French
- Year: 2000
- Author: María Dolores Gordón Peral (editor)
- Language: Spanish, Castilian
- Year: 2013
- Author: Ricardo Cierbide Martinena (editor)
- Language: Spanish, Castilian
- Year: 1993
- Author: Maria Giovanna Arcamone
- Language: German
- Year: 2002
- Author: Willy Bal, Jan Daeleman, Clémentine Faïk-Nzuji Madiya
- Language: French
- Year: 1992