Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Menéndez Pidal, Ramón",Idea imperial de Carlos V. : La condesa traidora ; El romanz del infant garcía ; Adefonsus Imperator Toletanus,5. ed,Espasa-Calpe,1963,Colección Austral,,,,https://cir.nii.ac.jp/crid/1130000798109637888