Il fantasma dell'opera - Porta, Nunziato (Aracne, 2007)
Electronic ed. avail at the URL: http: / / digital.casalini.it/ 9788854811348. - Incl. (p. 51-201) facs. repr. of 1775 and 1782 eds. of 2 librettos by Nunziato Porta (18th cent.), poet. - Cont. bibl