http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
opera in a prologue and three acts ; libretto by Francesco Maria Piave ; based on the drama by Antonio Garcia Gutieŕrez, with additions and revisions by Giuseppe Montanelli and Arrigo Boito ; English translation and essay by Mary Jane Phillips-Matz ; music by Giuseppe Verdi