{"source":"book","style":"apa","contributors": [{"function":"author","last":"Verdi","first":"Giuseppe"},{"function":"author","last":"Somma","first":"Antonio"},{"function":"author","last":"Fuchs","first":"Peter","middle":"Paul"},{"function":"author","last":"Scribe","first":"Eugene"} ],"pubtype": {"main": "pubnonperiodical"},"pubnonperiodical": {"title":"Un ballo in maschera = A masked ball : opera in three acts","publisher":"G. Schirmer","city":"New York","year":"1985"},"datasource":"/z-wcorg/","datasource":"http://www.worldcat.org","oclc":"15082645","isbn":"0793512190 9780793512195"}