- Author: Joan Maluquer de Motes, Elisabet Huntingford, Ricard Martín, Anna Maria Rauret, Ramón Pallarés, Maria del Vilar Vilà
- Language: Catalan
- Year: 1968
- Author: Joan Maluquer de Motes
- Language: Spanish
- Year: 1969
- Author: José María Jover Zamora, Ramón Menéndez Pidal, J. Maluquer de Motes, Antonio García y Bellido, Blas Taracena, Julio Caro Baroja
- Language: Spanish
- Year: 1954