- Author: Ricardo de la Cierva
- Language: Spanish
- Year: 1983
- Author: Ricardo de la Cierva
- Language: Spanish
- Year: 1999
- Author: Ricardo de la Cierva
- Language: Spanish
- Year: 1986
- Author: Ricardo de la Cierva
- Language: Spanish
- Year: 1967
- Author: Ricardo de la Cierva
- Language: Spanish
- Year: 1982
- Author: Ricardo de la Cierva
- Language: Spanish
- Author: Ricardo de la Cierva
- Language: Spanish
- Year: 1996
- Author: Ricardo de la Cierva
- Language: English
- Author: Ricardo de la Cierva
- Language: Spanish
- Year: 1997
- Author: Ricardo de la Cierva
- Language: Spanish
- Year: 2014