- Author: Joseph Raz
- Language: Portuguese
- Year: 2012
- Author: Gregorio Peces-Barba, Rafael de Asís, Eusebio Fernández, María Jose Fariñas, et al.
- Language: Spanish
- Year: 2000
- Author: Gregorio Peces-Barba, Rafael de Asís, Eusebio Fernández, María Jose Fariñas, et al.
- Language: Spanish
- Year: 2000