- Author: Bernard Vincent, Antonio Domínguez Ortiz
- Language: Spanish, Castilian
- Year: 1979
- Author: Julián Marías
- Language: Spanish
- Year: 1959
- Author: Rafael Arrillaga Torrens
- Language: Spanish
- Year: 1979
- Author: Fitche Johann Gottlieb
- Language: Spanish
- Year: 1976
- Author: José Antonio Maravall
- Language: Spanish
- Year: 1963
- Author: Julián Marías
- Language: Spanish
- Author: Heinz Heimsoeth
- Language: Spanish
- Year: 1974
- Author: Rosenberg Arturo
- Language: Spanish
- Author: Jorge Simmel Georg Simmel
- Language: Spanish
- Year: 1934
- Author: Otto Hinze
- Language: Spanish
- Year: 1968