Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"López, Manuel Torres and Farrés, Octavio Gil and Bances, Ramón Prieto",España Visigoda : 414-711 de J.C.,3. ed,Espasa-Calpe,1976,Historia de España,,"8423948005,8423948056",,https://cir.nii.ac.jp/crid/1130282272784969600