Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Berceo, Gonzalo de, 13th cent. and Nelson, Dana Arthur",El libro de Alixandre,,Gredos,1979,Biblioteca románica hispánica,,"8424907876,8424907884",,https://cir.nii.ac.jp/crid/1130000793803354368