- Author: Miguel Picado Gatjens
- Language: Spanish
- Year: 2003
- Author: Joseph Ratzinger (Benedicto XVI)
- Language: Spanish, Castilian
- Year: 2004
- Author: Joseph Ratzinger (Benedicto XVI)
- Language: Spanish, Castilian
- Year: 2001
- Author: Josef Estermann
- Language: Spanish
- Year: 2006
- Author: Pablo Richard
- Language: Spanish
- Year: 1987
- Author: Marciano Vidal
- Language: Spanish
- Author: Franz Josef Hinkelammert
- Language: Spanish
- Year: 1991
