Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Koch, Peter and Oesterreicher, Wulf and López Serena, Araceli","Lengua hablada en la Romania : español, francés, italiano",,Editorial Gredos,2007,Biblioteca románica hispánica,,9788424928667,,https://cir.nii.ac.jp/crid/1130000794989299968