- Author: Manuel García-Pelayo
- Language: Spanish
- Year: 1968
- Author: Manuel García Pelayo
- Language: Spanish
- Year: 1945
- Author: Franco Venturi
- Language: Spanish
- Year: 1975
- Author: Arthur Rosenberg
- Language: Spanish
- Year: 1926
- Author: Ortega y Gasset José
- Language: Spanish
- Year: 1965
- Author: Ortega y Gasset José
- Language: Spanish
- Year: 1964
- Author: Ortega y Gasset José
- Language: Spanish
- Year: 1964
- Author: Ortega y Gasset José
- Language: Spanish
- Year: 1964
- Author: Ortega y Gasset José
- Language: Spanish
- Year: 1966
- Author: Ortega y Gasset José
- Language: Spanish
- Year: 1966